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Article: Historical Aerial Surveys Map Long-Term Changes of Forest Cover and Structure in the Central Congo Basin

Hufkens, Koen / de Haulleville, Thalès / Kearsley, Elizabeth / Jacobsen, Kim / Beeckman, Hans / Stoffelen, Piet / Vandelook, Filip / Meeus, Sofie / Amara, Michael / Van Hirtum, Leen / Van den Bulcke, Jan / Verbeeck, Hans / Wingate, Lisa

Remote Sensing. 2020 Feb. 14, v. 12, no. 4

2020

Abstract: Given the impact of tropical forest disturbances on atmospheric carbon emissions, biodiversity, and ecosystem productivity, accurate long-term reporting of Land-Use and Land-Cover (LULC) change in the pre-satellite era (<1972) is an imperative. Here, we ... ...

Abstract	Given the impact of tropical forest disturbances on atmospheric carbon emissions, biodiversity, and ecosystem productivity, accurate long-term reporting of Land-Use and Land-Cover (LULC) change in the pre-satellite era (<1972) is an imperative. Here, we used a combination of historical (1958) aerial photography and contemporary remote sensing data to map long-term changes in the extent and structure of the tropical forest surrounding Yangambi (DR Congo) in the central Congo Basin. Our study leveraged structure-from-motion and a convolutional neural network-based LULC classifier, using synthetic landscape-based image augmentation to map historical forest cover across a large orthomosaic (~93,431 ha) geo-referenced to ~4.7 ± 4.3 m at submeter resolution. A comparison with contemporary LULC data showed a shift from previously highly regular industrial deforestation of large areas to discrete smallholder farming clearing, increasing landscape fragmentation and providing opportunties for substantial forest regrowth. We estimated aboveground carbon gains through reforestation to range from 811 to 1592 Gg C, partially offsetting historical deforestation (2416 Gg C), in our study area. Efforts to quantify long-term canopy texture changes and their link to aboveground carbon had limited to no success. Our analysis provides methods and insights into key spatial and temporal patterns of deforestation and reforestation at a multi-decadal scale, providing a historical context for past and ongoing forest research in the area.
Keywords	aerial photography ; aerial surveys ; basins ; biodiversity ; canopy ; carbon ; deforestation ; ecosystems ; emissions ; georeferencing ; habitat fragmentation ; land use and land cover maps ; reforestation ; remote sensing ; small-scale farming ; spatial data ; texture ; tropical forests ; Democratic Republic of the Congo
Language	English
Dates of publication	2020-0214
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2513863-7
ISSN	2072-4292
ISSN	2072-4292
DOI	10.3390/rs12040638
Database	NAL-Catalogue (AGRICOLA)

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Article: Fourteen years of anthropization dynamics in the Uapaca bojeri Baill. forest of Madagascar

de Haulleville, Thalès / Olivia L. Rakotondrasoa / Harifidy Rakoto Ratsimba / Jean-François Bastin / Yves Brostaux / François J. Verheggen / Gabrielle L. Rajoelison / François Malaisse / Marc Poncelet / Éric Haubruge / Hans Beeckman / Jan Bogaert

Landscape and ecological engineering. 2018 Jan., v. 14, no. 1

2018

Abstract: Anthropization of forest landscapes is a major threat to ecosystems and biodiversity. To gather comprehensive information on anthropization dynamics in forest landscapes, fine-scale surveys of deforestation are required, coupled with detailed analysis of ...

Abstract	Anthropization of forest landscapes is a major threat to ecosystems and biodiversity. To gather comprehensive information on anthropization dynamics in forest landscapes, fine-scale surveys of deforestation are required, coupled with detailed analysis of both spatial transformation processes and forest patch geometry. We conducted such a comprehensive study in a monospecific Uapaca bojeri (Baill.) forest of Madagascar, between 1999 and 2013. A diachronic set of four maps was produced and deforestation rates were calculated. Spatial transformation processes were described using Bogaert et al. (2004) typology. Forest patch geometry was monitored using largest patch index, mean patch size, and squared mean patch size to describe patch size dynamics, mean shape index and area weighted mean shape index to describe patch compactness, and fractal dimension analysis to describe patch outline complexity. For fractal dimension analysis, an innovative segmented regression model (Muggeo 2008) was used to separately quantify fractal dimensions for multiple ranges of patch sizes. Our results showed a growing anthropization of the U. bojeri forest landscape in the area, through a strong yet decelerating deforestation (from − 59.5% year⁻¹ between 1999 and 2005 to − 2.84% year⁻¹ between 2009 and 2013), clear forest fragmentation, and a subtle yet growing-in-scale simplification of patch geometry for small forest patches. Deforestation was artisanal in nature and, in 2013, large patches were withdrawing to less accessible topographic features. Our results forecast a medium-term loss of resilience of the U. bojeri forest in the area, if no direct forest conservation measures are taken.
Keywords	Uapaca ; biodiversity ; deforestation ; ecosystems ; forest conservation ; forests ; fractal dimensions ; geometry ; habitat fragmentation ; landscapes ; regression analysis ; surveys ; topography ; traditional technology ; Madagascar
Language	English
Dates of publication	2018-01
Size	p. 135-146.
Publishing place	Springer Japan
Document type	Article
ZDB-ID	2266588-2
ISSN	1860-188X ; 1860-1871
ISSN (online)	1860-188X
ISSN	1860-1871
DOI	10.1007/s11355-017-0340-z
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Wood Specific Gravity Variations and Biomass of Central African Tree Species: The Simple Choice of the Outer Wood.

Bastin, Jean-François / Fayolle, Adeline / Tarelkin, Yegor / Van den Bulcke, Jan / de Haulleville, Thales / Mortier, Frederic / Beeckman, Hans / Van Acker, Joris / Serckx, Adeline / Bogaert, Jan / De Cannière, Charles

PloS one

2015 Volume 10, Issue 11, Page(s) e0142146

Abstract: Context: Wood specific gravity is a key element in tropical forest ecology. It integrates many aspects of tree mechanical properties and functioning and is an important predictor of tree biomass. Wood specific gravity varies widely among and within ... ...

Abstract	Context: Wood specific gravity is a key element in tropical forest ecology. It integrates many aspects of tree mechanical properties and functioning and is an important predictor of tree biomass. Wood specific gravity varies widely among and within species and also within individual trees. Notably, contrasted patterns of radial variation of wood specific gravity have been demonstrated and related to regeneration guilds (light demanding vs. shade-bearing). However, although being repeatedly invoked as a potential source of error when estimating the biomass of trees, both intraspecific and radial variations remain little studied. In this study we characterized detailed pith-to-bark wood specific gravity profiles among contrasted species prominently contributing to the biomass of the forest, i.e., the dominant species, and we quantified the consequences of such variations on the biomass. Methods: Radial profiles of wood density at 8% moisture content were compiled for 14 dominant species in the Democratic Republic of Congo, adapting a unique 3D X-ray scanning technique at very high spatial resolution on core samples. Mean wood density estimates were validated by water displacement measurements. Wood density profiles were converted to wood specific gravity and linear mixed models were used to decompose the radial variance. Potential errors in biomass estimation were assessed by comparing the biomass estimated from the wood specific gravity measured from pith-to-bark profiles, from global repositories, and from partial information (outer wood or inner wood). Results: Wood specific gravity profiles from pith-to-bark presented positive, neutral and negative trends. Positive trends mainly characterized light-demanding species, increasing up to 1.8 g.cm-3 per meter for Piptadeniastrum africanum, and negative trends characterized shade-bearing species, decreasing up to 1 g.cm-3 per meter for Strombosia pustulata. The linear mixed model showed the greater part of wood specific gravity variance was explained by species only (45%) followed by a redundant part between species and regeneration guilds (36%). Despite substantial variation in wood specific gravity profiles among species and regeneration guilds, we found that values from the outer wood were strongly correlated to values from the whole profile, without any significant bias. In addition, we found that wood specific gravity from the DRYAD global repository may strongly differ depending on the species (up to 40% for Dialium pachyphyllum). Main conclusion: Therefore, when estimating forest biomass in specific sites, we recommend the systematic collection of outer wood samples on dominant species. This should prevent the main errors in biomass estimations resulting from wood specific gravity and allow for the collection of new information to explore the intraspecific variation of mechanical properties of trees.
MeSH term(s)	Africa, Central ; Biomass ; Specific Gravity ; Trees ; Wood
Language	English
Publishing date	2015-11-10
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0142146
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Article ; Online: Conventional tree height-diameter relationships significantly overestimate aboveground carbon stocks in the Central Congo Basin.

Kearsley, Elizabeth / de Haulleville, Thales / Hufkens, Koen / Kidimbu, Alidé / Toirambe, Benjamin / Baert, Geert / Huygens, Dries / Kebede, Yodit / Defourny, Pierre / Bogaert, Jan / Beeckman, Hans / Steppe, Kathy / Boeckx, Pascal / Verbeeck, Hans

Nature communications

2013 Volume 4, Page(s) 2269

Abstract: Policies to reduce emissions from deforestation and forest degradation largely depend on accurate estimates of tropical forest carbon stocks. Here we present the first field-based carbon stock data for the Central Congo Basin in Yangambi, Democratic ... ...

Abstract	Policies to reduce emissions from deforestation and forest degradation largely depend on accurate estimates of tropical forest carbon stocks. Here we present the first field-based carbon stock data for the Central Congo Basin in Yangambi, Democratic Republic of Congo. We find an average aboveground carbon stock of 162 ± 20 Mg C ha(-1) for intact old-growth forest, which is significantly lower than stocks recorded in the outer regions of the Congo Basin. The best available tree height-diameter relationships derived for Central Africa do not render accurate canopy height estimates for our study area. Aboveground carbon stocks would be overestimated by 24% if these inaccurate relationships were used. The studied forests have a lower stature compared with forests in the outer regions of the basin, which confirms remotely sensed patterns. Additionally, we find an average soil carbon stock of 111 ± 24 Mg C ha(-1), slightly influenced by the current land-use change.
MeSH term(s)	Carbon/metabolism ; Climate ; Congo ; Conservation of Natural Resources ; Geography ; Models, Biological ; Regression Analysis ; Soil/chemistry ; Trees/anatomy & histology
Chemical Substances	Soil ; Carbon (7440-44-0)
Language	English
Publishing date	2013
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	2041-1723
ISSN (online)	2041-1723
DOI	10.1038/ncomms3269
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Resistance of African tropical forests to an extreme climate anomaly.

Bennett, Amy C / Dargie, Greta C / Cuni-Sanchez, Aida / Tshibamba Mukendi, John / Hubau, Wannes / Mukinzi, Jacques M / Phillips, Oliver L / Malhi, Yadvinder / Sullivan, Martin J P / Cooper, Declan L M / Adu-Bredu, Stephen / Affum-Baffoe, Kofi / Amani, Christian A / Banin, Lindsay F / Beeckman, Hans / Begne, Serge K / Bocko, Yannick E / Boeckx, Pascal / Bogaert, Jan /

Brncic, Terry / Chezeaux, Eric / Clark, Connie J / Daniels, Armandu K / de Haulleville, Thales / Djuikouo Kamdem, Marie-Noël / Doucet, Jean-Louis / Evouna Ondo, Fidèle / Ewango, Corneille E N / Feldpausch, Ted R / Foli, Ernest G / Gonmadje, Christelle / Hall, Jefferson S / Hardy, Olivier J / Harris, David J / Ifo, Suspense A / Jeffery, Kathryn J / Kearsley, Elizabeth / Leal, Miguel / Levesley, Aurora / Makana, Jean-Remy / Mbayu Lukasu, Faustin / Medjibe, Vincent P / Mihindu, Vianet / Moore, Sam / Nssi Begone, Natacha / Pickavance, Georgia C / Poulsen, John R / Reitsma, Jan / Sonké, Bonaventure / Sunderland, Terry C H / Taedoumg, Hermann / Talbot, Joey / Tuagben, Darlington S / Umunay, Peter M / Verbeeck, Hans / Vleminckx, Jason / White, Lee J T / Woell, Hannsjoerg / Woods, John T / Zemagho, Lise / Lewis, Simon L

Proceedings of the National Academy of Sciences of the United States of America

2021 Volume 118, Issue 21

Abstract: The responses of tropical forests to environmental change are critical uncertainties in predicting the future impacts of climate change. The positive phase of the 2015-2016 El Niño Southern Oscillation resulted in unprecedented heat and low precipitation ...

Abstract	The responses of tropical forests to environmental change are critical uncertainties in predicting the future impacts of climate change. The positive phase of the 2015-2016 El Niño Southern Oscillation resulted in unprecedented heat and low precipitation in the tropics with substantial impacts on the global carbon cycle. The role of African tropical forests is uncertain as their responses to short-term drought and temperature anomalies have yet to be determined using on-the-ground measurements. African tropical forests may be particularly sensitive because they exist in relatively dry conditions compared with Amazonian or Asian forests, or they may be more resistant because of an abundance of drought-adapted species. Here, we report responses of structurally intact old-growth lowland tropical forests inventoried within the African Tropical Rainforest Observatory Network (AfriTRON). We use 100 long-term inventory plots from six countries each measured at least twice prior to and once following the 2015-2016 El Niño event. These plots experienced the highest temperatures and driest conditions on record. The record temperature did not significantly reduce carbon gains from tree growth or significantly increase carbon losses from tree mortality, but the record drought did significantly decrease net carbon uptake. Overall, the long-term biomass increase of these forests was reduced due to the El Niño event, but these plots remained a live biomass carbon sink (0.51 ± 0.40 Mg C ha
MeSH term(s)	Carbon Cycle ; Climate Change ; Droughts ; El Nino-Southern Oscillation ; Hot Temperature ; Humans ; Rainforest ; Seasons ; Trees/growth & development ; Tropical Climate
Language	English
Publishing date	2021-05-17
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	209104-5
ISSN	1091-6490 ; 0027-8424
ISSN (online)	1091-6490
ISSN	0027-8424
DOI	10.1073/pnas.2003169118
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Article ; Online: Taking the pulse of Earth's tropical forests using networks of highly distributed plots

Blundo, Cecilia / Carilla, Julieta / Grau, Ricardo / Malizia, Agustina / Malizia, Lucio / Osinaga-Acosta, Oriana / Bird, Michael / Bradford, Matt / Catchpole, Damien / Ford, Andrew / Graham, Andrew / Hilbert, David / Kemp, Jeanette / Laurance, Susan / Laurance, William / Ishida, Francoise Yoko / Marshall, Andrew / Waite, Catherine / Woell, Hannsjoerg /

Bastin, Jean Francois / Bauters, Marijn / Beeckman, Hans / Boeckx, Pfascal / Bogaert, Jan / De Canniere, Charles / de Haulleville, Thales / Doucet, Jean Louis / Hardy, Olivier / Hubau, Wannes / Kearsley, Elizabeth / Verbeeck, Hans / Vleminckx, Jason / Brewer, Steven W. / Alarcón, Alfredo / Araujo-Murakami, Alejandro / Arets, Eric / Arroyo, Luzmila / Chavez, Ezequiel / Fredericksen, Todd / Villaroel, René Guillén / Peña-Claros, Marielos / Zagt, Roderick / Sheil, Douglas / Bongers, Frans / van Andel, Tinde / Veenendaal, Elmar / Zuidema, Pieter / Zwerts, Joeri / Leal, Miguel / Duan, Muying / Phillips, Oliver L. / Poorter, L.

Biological Conservation

2021 Volume 260

Abstract: Tropical forests are the most diverse and productive ecosystems on Earth. While better understanding of these forests is critical for our collective future, until quite recently efforts to measure and monitor them have been largely disconnected. ... ...

Abstract	Tropical forests are the most diverse and productive ecosystems on Earth. While better understanding of these forests is critical for our collective future, until quite recently efforts to measure and monitor them have been largely disconnected. Networking is essential to discover the answers to questions that transcend borders and the horizons of funding agencies. Here we show how a global community is responding to the challenges of tropical ecosystem research with diverse teams measuring forests tree-by-tree in thousands of long-term plots. We review the major scientific discoveries of this work and show how this process is changing tropical forest science. Our core approach involves linking long-term grassroots initiatives with standardized protocols and data management to generate robust scaled-up results. By connecting tropical researchers and elevating their status, our Social Research Network model recognises the key role of the data originator in scientific discovery. Conceived in 1999 with RAINFOR (South America), our permanent plot networks have been adapted to Africa (AfriTRON) and Southeast Asia (T-FORCES) and widely emulated worldwide. Now these multiple initiatives are integrated via ForestPlots.net cyber-infrastructure, linking colleagues from 54 countries across 24 plot networks. Collectively these are transforming understanding of tropical forests and their biospheric role. Together we have discovered how, where and why forest carbon and biodiversity are responding to climate change, and how they feedback on it. This long-term pan-tropical collaboration has revealed a large long-term carbon sink and its trends, as well as making clear which drivers are most important, which forest processes are affected, where they are changing, what the lags are, and the likely future responses of tropical forests as the climate continues to change. By leveraging a remarkably old technology, plot networks are sparking a very modern revolution in tropical forest science. In the future, humanity can benefit ...
Keywords	AfriTRON ; Africa ; Amazonia ; Biodiversity ; Carbon sink ; Dynamics ; Ecology ; Forest plots ; Global change ; Monitoring ; Permanent sample plots ; RAINFOR ; Rainforest ; Southeast Asia ; Species richness
Subject code	333
Language	English
Publishing country	nl
Document type	Article ; Online
ISSN	0006-3207
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: High aboveground carbon stock of African tropical montane forests.

Cuni-Sanchez, Aida / Sullivan, Martin J P / Platts, Philip J / Lewis, Simon L / Marchant, Rob / Imani, Gérard / Hubau, Wannes / Abiem, Iveren / Adhikari, Hari / Albrecht, Tomas / Altman, Jan / Amani, Christian / Aneseyee, Abreham B / Avitabile, Valerio / Banin, Lindsay / Batumike, Rodrigue / Bauters, Marijn / Beeckman, Hans / Begne, Serge K /

Bennett, Amy C / Bitariho, Robert / Boeckx, Pascal / Bogaert, Jan / Bräuning, Achim / Bulonvu, Franklin / Burgess, Neil D / Calders, Kim / Chapman, Colin / Chapman, Hazel / Comiskey, James / de Haulleville, Thales / Decuyper, Mathieu / DeVries, Ben / Dolezal, Jiri / Droissart, Vincent / Ewango, Corneille / Feyera, Senbeta / Gebrekirstos, Aster / Gereau, Roy / Gilpin, Martin / Hakizimana, Dismas / Hall, Jefferson / Hamilton, Alan / Hardy, Olivier / Hart, Terese / Heiskanen, Janne / Hemp, Andreas / Herold, Martin / Hiltner, Ulrike / Horak, David / Kamdem, Marie-Noel / Kayijamahe, Charles / Kenfack, David / Kinyanjui, Mwangi J / Klein, Julia / Lisingo, Janvier / Lovett, Jon / Lung, Mark / Makana, Jean-Remy / Malhi, Yadvinder / Marshall, Andrew / Martin, Emanuel H / Mitchard, Edward T A / Morel, Alexandra / Mukendi, John T / Muller, Tom / Nchu, Felix / Nyirambangutse, Brigitte / Okello, Joseph / Peh, Kelvin S-H / Pellikka, Petri / Phillips, Oliver L / Plumptre, Andrew / Qie, Lan / Rovero, Francesco / Sainge, Moses N / Schmitt, Christine B / Sedlacek, Ondrej / Ngute, Alain S K / Sheil, Douglas / Sheleme, Demisse / Simegn, Tibebu Y / Simo-Droissart, Murielle / Sonké, Bonaventure / Soromessa, Teshome / Sunderland, Terry / Svoboda, Miroslav / Taedoumg, Hermann / Taplin, James / Taylor, David / Thomas, Sean C / Timberlake, Jonathan / Tuagben, Darlington / Umunay, Peter / Uzabaho, Eustrate / Verbeeck, Hans / Vleminckx, Jason / Wallin, Göran / Wheeler, Charlotte / Willcock, Simon / Woods, John T / Zibera, Etienne

Nature

2021 Volume 596, Issue 7873, Page(s) 536–542

Abstract: Tropical forests store 40-50 per cent of terrestrial vegetation ... ...

Abstract	Tropical forests store 40-50 per cent of terrestrial vegetation carbon
MeSH term(s)	Africa ; Attitude ; Biomass ; Carbon/analysis ; Carbon Sequestration ; Climate Change ; Conservation of Natural Resources ; Datasets as Topic ; Geographic Mapping ; Rainforest ; Trees/metabolism ; Tropical Climate
Chemical Substances	Carbon (7440-44-0)
Language	English
Publishing date	2021-08-25
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	120714-3
ISSN	1476-4687 ; 0028-0836
ISSN (online)	1476-4687
ISSN	0028-0836
DOI	10.1038/s41586-021-03728-4
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Article ; Online: High aboveground carbon stock of African tropical montane forests

Cuni-Sanchez, Aida / Sullivan, Martin J.P. / Platts, Philip J. / Lewis, Simon L. / Marchant, Rob / Imani, Gérard / Hubau, Wannes / Abiem, Iveren / Adhikari, Hari / Albrecht, Tomas / Altman, Jan / Amani, Christian / Aneseyee, Abreham B. / Avitabile, Valerio / Banin, Lindsay / Batumike, Rodrigue / Bauters, Marijn / Beeckman, Hans / Begne, Serge K. /

Bennett, Amy C. / Bitariho, Robert / Boeckx, Pascal / Bogaert, Jan / Bräuning, Achim / Bulonvu, Franklin / Burgess, Neil D. / Calders, Kim / Chapman, Colin / Chapman, Hazel / Comiskey, James / de Haulleville, Thales / Decuyper, Mathieu / DeVries, Ben / Dolezal, Jiri / Droissart, Vincent / Ewango, Corneille / Feyera, Senbeta / Gebrekirstos, Aster / Gereau, Roy / Gilpin, Martin / Hakizimana, Dismas / Hall, Jefferson / Hamilton, Alan / Hardy, Olivier / Hart, Terese / Heiskanen, Janne / Hemp, Andreas / Herold, Martin / Hiltner, Ulrike / Horak, David / Kamdem, Marie Noel / Kayijamahe, Charles / Kenfack, David / Kinyanjui, Mwangi J. / Klein, Julia / Lisingo, Janvier / Lovett, Jon / Lung, Mark / Makana, Jean Remy / Malhi, Yadvinder / Marshall, Andrew / Martin, Emanuel H. / Mitchard, Edward T.A. / Morel, Alexandra / Mukendi, John T. / Muller, Tom / Nchu, Felix / Nyirambangutse, Brigitte / Okello, Joseph / Peh, Kelvin S.H. / Pellikka, Petri / Phillips, Oliver L. / Plumptre, Andrew / Qie, Lan / Rovero, Francesco / Sainge, Moses N. / Schmitt, Christine B. / Sedlacek, Ondrej / Ngute, Alain S.K. / Sheil, Douglas / Sheleme, Demisse / Simegn, Tibebu Y. / Simo-Droissart, Murielle / Sonké, Bonaventure / Soromessa, Teshome / Sunderland, Terry / Svoboda, Miroslav / Taedoumg, Hermann / Taplin, James / Taylor, David / Thomas, Sean C. / Timberlake, Jonathan / Tuagben, Darlington / Umunay, Peter / Uzabaho, Eustrate / Verbeeck, Hans / Vleminckx, Jason / Wallin, Göran / Wheeler, Charlotte / Willcock, Simon / Woods, John T. / Zibera, Etienne

Nature

2021 Volume 596, Issue 7873

Abstract: Tropical forests store 40–50 per cent of terrestrial vegetation carbon1. However, spatial variations in aboveground live tree biomass carbon (AGC) stocks remain poorly understood, in particular in tropical montane forests2. Owing to climatic and soil ... ...

Abstract	Tropical forests store 40–50 per cent of terrestrial vegetation carbon1. However, spatial variations in aboveground live tree biomass carbon (AGC) stocks remain poorly understood, in particular in tropical montane forests2. Owing to climatic and soil changes with increasing elevation3, AGC stocks are lower in tropical montane forests compared with lowland forests2. Here we assemble and analyse a dataset of structurally intact old-growth forests (AfriMont) spanning 44 montane sites in 12 African countries. We find that montane sites in the AfriMont plot network have a mean AGC stock of 149.4 megagrams of carbon per hectare (95% confidence interval 137.1–164.2), which is comparable to lowland forests in the African Tropical Rainforest Observation Network4 and about 70 per cent and 32 per cent higher than averages from plot networks in montane2,5,6 and lowland7 forests in the Neotropics, respectively. Notably, our results are two-thirds higher than the Intergovernmental Panel on Climate Change default values for these forests in Africa8. We find that the low stem density and high abundance of large trees of African lowland forests4 is mirrored in the montane forests sampled. This carbon store is endangered: we estimate that 0.8 million hectares of old-growth African montane forest have been lost since 2000. We provide country-specific montane forest AGC stock estimates modelled from our plot network to help to guide forest conservation and reforestation interventions. Our findings highlight the need for conserving these biodiverse9,10 and carbon-rich ecosystems.
Keywords	Life Science
Subject code	333
Language	English
Publishing country	nl
Document type	Article ; Online
ZDB-ID	120714-3
ISSN	1476-4687 ; 0028-0836
ISSN (online)	1476-4687
ISSN	0028-0836
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Consistent patterns of common species across tropical tree communities.

Cooper, Declan L M / Lewis, Simon L / Sullivan, Martin J P / Prado, Paulo I / Ter Steege, Hans / Barbier, Nicolas / Slik, Ferry / Sonké, Bonaventure / Ewango, Corneille E N / Adu-Bredu, Stephen / Affum-Baffoe, Kofi / de Aguiar, Daniel P P / Ahuite Reategui, Manuel Augusto / Aiba, Shin-Ichiro / Albuquerque, Bianca Weiss / de Almeida Matos, Francisca Dionízia / Alonso, Alfonso / Amani, Christian A / do Amaral, Dário Dantas /

do Amaral, Iêda Leão / Andrade, Ana / de Andrade Miranda, Ires Paula / Angoboy, Ilondea B / Araujo-Murakami, Alejandro / Arboleda, Nicolás Castaño / Arroyo, Luzmila / Ashton, Peter / Aymard C, Gerardo A / Baider, Cláudia / Baker, Timothy R / Balinga, Michael Philippe Bessike / Balslev, Henrik / Banin, Lindsay F / Bánki, Olaf S / Baraloto, Chris / Barbosa, Edelcilio Marques / Barbosa, Flávia Rodrigues / Barlow, Jos / Bastin, Jean-Francois / Beeckman, Hans / Begne, Serge / Bengone, Natacha Nssi / Berenguer, Erika / Berry, Nicholas / Bitariho, Robert / Boeckx, Pascal / Bogaert, Jan / Bonyoma, Bernard / Boundja, Patrick / Bourland, Nils / Boyemba Bosela, Faustin / Brambach, Fabian / Brienen, Roel / Burslem, David F R P / Camargo, José Luís / Campelo, Wegliane / Cano, Angela / Cárdenas, Sasha / Cárdenas López, Dairon / de Sá Carpanedo, Rainiellen / Carrero Márquez, Yrma Andreina / Carvalho, Fernanda Antunes / Casas, Luisa Fernanda / Castellanos, Hernán / Castilho, Carolina V / Cerón, Carlos / Chapman, Colin A / Chave, Jerome / Chhang, Phourin / Chutipong, Wanlop / Chuyong, George B / Cintra, Bruno Barçante Ladvocat / Clark, Connie J / Coelho de Souza, Fernanda / Comiskey, James A / Coomes, David A / Cornejo Valverde, Fernando / Correa, Diego F / Costa, Flávia R C / Costa, Janaina Barbosa Pedrosa / Couteron, Pierre / Culmsee, Heike / Cuni-Sanchez, Aida / Dallmeier, Francisco / Damasco, Gabriel / Dauby, Gilles / Dávila, Nállarett / Dávila Doza, Hilda Paulette / De Alban, Jose Don T / de Assis, Rafael L / De Canniere, Charles / De Haulleville, Thales / de Jesus Veiga Carim, Marcelo / Demarchi, Layon O / Dexter, Kyle G / Di Fiore, Anthony / Din, Hazimah Haji Mohammad / Disney, Mathias I / Djiofack, Brice Yannick / Djuikouo, Marie-Noël K / Do, Tran Van / Doucet, Jean-Louis / Draper, Freddie C / Droissart, Vincent / Duivenvoorden, Joost F / Engel, Julien / Estienne, Vittoria / Farfan-Rios, William / Fauset, Sophie / Feeley, Kenneth J / Feitosa, Yuri Oliveira / Feldpausch, Ted R / Ferreira, Cid / Ferreira, Joice / Ferreira, Leandro Valle / Fletcher, Christine D / Flores, Bernardo Monteiro / Fofanah, Alusine / Foli, Ernest G / Fonty, Émile / Fredriksson, Gabriella M / Fuentes, Alfredo / Galbraith, David / Gallardo Gonzales, George Pepe / Garcia-Cabrera, Karina / García-Villacorta, Roosevelt / Gomes, Vitor H F / Gómez, Ricardo Zárate / Gonzales, Therany / Gribel, Rogerio / Guedes, Marcelino Carneiro / Guevara, Juan Ernesto / Hakeem, Khalid Rehman / Hall, Jefferson S / Hamer, Keith C / Hamilton, Alan C / Harris, David J / Harrison, Rhett D / Hart, Terese B / Hector, Andy / Henkel, Terry W / Herbohn, John / Hockemba, Mireille B N / Hoffman, Bruce / Holmgren, Milena / Honorio Coronado, Euridice N / Huamantupa-Chuquimaco, Isau / Hubau, Wannes / Imai, Nobuo / Irume, Mariana Victória / Jansen, Patrick A / Jeffery, Kathryn J / Jimenez, Eliana M / Jucker, Tommaso / Junqueira, André Braga / Kalamandeen, Michelle / Kamdem, Narcisse G / Kartawinata, Kuswata / Kasongo Yakusu, Emmanuel / Katembo, John M / Kearsley, Elizabeth / Kenfack, David / Kessler, Michael / Khaing, Thiri Toe / Killeen, Timothy J / Kitayama, Kanehiro / Klitgaard, Bente / Labrière, Nicolas / Laumonier, Yves / Laurance, Susan G W / Laurance, William F / Laurent, Félix / Le, Tinh Cong / Le, Trai Trong / Leal, Miguel E / Leão de Moraes Novo, Evlyn Márcia / Levesley, Aurora / Libalah, Moses B / Licona, Juan Carlos / Lima Filho, Diógenes de Andrade / Lindsell, Jeremy A / Lopes, Aline / Lopes, Maria Aparecida / Lovett, Jon C / Lowe, Richard / Lozada, José Rafael / Lu, Xinghui / Luambua, Nestor K / Luize, Bruno Garcia / Maas, Paul / Magalhães, José Leonardo Lima / Magnusson, William E / Mahayani, Ni Putu Diana / Makana, Jean-Remy / Malhi, Yadvinder / Maniguaje Rincón, Lorena / Mansor, Asyraf / Manzatto, Angelo Gilberto / Marimon, Beatriz S / Marimon-Junior, Ben Hur / Marshall, Andrew R / Martins, Maria Pires / Mbayu, Faustin M / de Medeiros, Marcelo Brilhante / Mesones, Italo / Metali, Faizah / Mihindou, Vianet / Millet, Jerome / Milliken, William / Mogollón, Hugo F / Molino, Jean-François / Mohd Said, Mohd Nizam / Monteagudo Mendoza, Abel / Montero, Juan Carlos / Moore, Sam / Mostacedo, Bonifacio / Mozombite Pinto, Linder Felipe / Mukul, Sharif Ahmed / Munishi, Pantaleo K T / Nagamasu, Hidetoshi / Nascimento, Henrique Eduardo Mendonça / Nascimento, Marcelo Trindade / Neill, David / Nilus, Reuben / Noronha, Janaína Costa / Nsenga, Laurent / Núñez Vargas, Percy / Ojo, Lucas / Oliveira, Alexandre A / de Oliveira, Edmar Almeida / Ondo, Fidèle Evouna / Palacios Cuenca, Walter / Pansini, Susamar / Pansonato, Marcelo Petratti / Paredes, Marcos Ríos / Paudel, Ekananda / Pauletto, Daniela / Pearson, Richard G / Pena, José Luis Marcelo / Pennington, R Toby / Peres, Carlos A / Permana, Andrea / Petronelli, Pascal / Peñuela Mora, Maria Cristina / Phillips, Juan Fernando / Phillips, Oliver L / Pickavance, Georgia / Piedade, Maria Teresa Fernandez / Pitman, Nigel C A / Ploton, Pierre / Popelier, Andreas / Poulsen, John R / Prieto, Adriana / Primack, Richard B / Priyadi, Hari / Qie, Lan / Quaresma, Adriano Costa / de Queiroz, Helder Lima / Ramirez-Angulo, Hirma / Ramos, José Ferreira / Reis, Neidiane Farias Costa / Reitsma, Jan / Revilla, Juan David Cardenas / Riutta, Terhi / Rivas-Torres, Gonzalo / Robiansyah, Iyan / Rocha, Maira / Rodrigues, Domingos de Jesus / Rodriguez-Ronderos, M Elizabeth / Rovero, Francesco / Rozak, Andes H / Rudas, Agustín / Rutishauser, Ervan / Sabatier, Daniel / Sagang, Le Bienfaiteur / Sampaio, Adeilza Felipe / Samsoedin, Ismayadi / Satdichanh, Manichanh / Schietti, Juliana / Schöngart, Jochen / Scudeller, Veridiana Vizoni / Seuaturien, Naret / Sheil, Douglas / Sierra, Rodrigo / Silman, Miles R / Silva, Thiago Sanna Freire / da Silva Guimarães, José Renan / Simo-Droissart, Murielle / Simon, Marcelo Fragomeni / Sist, Plinio / Sousa, Thaiane R / de Sousa Farias, Emanuelle / de Souza Coelho, Luiz / Spracklen, Dominick V / Stas, Suzanne M / Steinmetz, Robert / Stevenson, Pablo R / Stropp, Juliana / Sukri, Rahayu S / Sunderland, Terry C H / Suzuki, Eizi / Swaine, Michael D / Tang, Jianwei / Taplin, James / Taylor, David M / Tello, J Sebastián / Terborgh, John / Texier, Nicolas / Theilade, Ida / Thomas, Duncan W / Thomas, Raquel / Thomas, Sean C / Tirado, Milton / Toirambe, Benjamin / de Toledo, José Julio / Tomlinson, Kyle W / Torres-Lezama, Armando / Tran, Hieu Dang / Tshibamba Mukendi, John / Tumaneng, Roven D / Umaña, Maria Natalia / Umunay, Peter M / Urrego Giraldo, Ligia Estela / Valderrama Sandoval, Elvis H / Valenzuela Gamarra, Luis / Van Andel, Tinde R / van de Bult, Martin / van de Pol, Jaqueline / van der Heijden, Geertje / Vasquez, Rodolfo / Vela, César I A / Venticinque, Eduardo Martins / Verbeeck, Hans / Veridiano, Rizza Karen A / Vicentini, Alberto / Vieira, Ima Célia Guimarães / Vilanova Torre, Emilio / Villarroel, Daniel / Villa Zegarra, Boris Eduardo / Vleminckx, Jason / von Hildebrand, Patricio / Vos, Vincent Antoine / Vriesendorp, Corine / Webb, Edward L / White, Lee J T / Wich, Serge / Wittmann, Florian / Zagt, Roderick / Zang, Runguo / Zartman, Charles Eugene / Zemagho, Lise / Zent, Egleé L / Zent, Stanford

Nature

2024 Volume 625, Issue 7996, Page(s) 728–734

Abstract: Trees structure the Earth's most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most ... ...

Abstract	Trees structure the Earth's most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most tropical tree species. A focus on the common species may circumvent this challenge. Here we investigate abundance patterns of common tree species using inventory data on 1,003,805 trees with trunk diameters of at least 10 cm across 1,568 locations
MeSH term(s)	Biodiversity ; Forests ; Trees/anatomy & histology ; Trees/classification ; Trees/growth & development ; Tropical Climate ; Africa ; Asia, Southeastern
Language	English
Publishing date	2024-01-10
Publishing country	England
Document type	Journal Article
ZDB-ID	120714-3
ISSN	1476-4687 ; 0028-0836
ISSN (online)	1476-4687
ISSN	0028-0836
DOI	10.1038/s41586-023-06820-z
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Article ; Online: Asynchronous carbon sink saturation in African and Amazonian tropical forests.

Hubau, Wannes / Lewis, Simon L / Phillips, Oliver L / Affum-Baffoe, Kofi / Beeckman, Hans / Cuní-Sanchez, Aida / Daniels, Armandu K / Ewango, Corneille E N / Fauset, Sophie / Mukinzi, Jacques M / Sheil, Douglas / Sonké, Bonaventure / Sullivan, Martin J P / Sunderland, Terry C H / Taedoumg, Hermann / Thomas, Sean C / White, Lee J T / Abernethy, Katharine A / Adu-Bredu, Stephen /

Amani, Christian A / Baker, Timothy R / Banin, Lindsay F / Baya, Fidèle / Begne, Serge K / Bennett, Amy C / Benedet, Fabrice / Bitariho, Robert / Bocko, Yannick E / Boeckx, Pascal / Boundja, Patrick / Brienen, Roel J W / Brncic, Terry / Chezeaux, Eric / Chuyong, George B / Clark, Connie J / Collins, Murray / Comiskey, James A / Coomes, David A / Dargie, Greta C / de Haulleville, Thales / Kamdem, Marie Noel Djuikouo / Doucet, Jean-Louis / Esquivel-Muelbert, Adriane / Feldpausch, Ted R / Fofanah, Alusine / Foli, Ernest G / Gilpin, Martin / Gloor, Emanuel / Gonmadje, Christelle / Gourlet-Fleury, Sylvie / Hall, Jefferson S / Hamilton, Alan C / Harris, David J / Hart, Terese B / Hockemba, Mireille B N / Hladik, Annette / Ifo, Suspense A / Jeffery, Kathryn J / Jucker, Tommaso / Yakusu, Emmanuel Kasongo / Kearsley, Elizabeth / Kenfack, David / Koch, Alexander / Leal, Miguel E / Levesley, Aurora / Lindsell, Jeremy A / Lisingo, Janvier / Lopez-Gonzalez, Gabriela / Lovett, Jon C / Makana, Jean-Remy / Malhi, Yadvinder / Marshall, Andrew R / Martin, Jim / Martin, Emanuel H / Mbayu, Faustin M / Medjibe, Vincent P / Mihindou, Vianet / Mitchard, Edward T A / Moore, Sam / Munishi, Pantaleo K T / Bengone, Natacha Nssi / Ojo, Lucas / Ondo, Fidèle Evouna / Peh, Kelvin S-H / Pickavance, Georgia C / Poulsen, Axel Dalberg / Poulsen, John R / Qie, Lan / Reitsma, Jan / Rovero, Francesco / Swaine, Michael D / Talbot, Joey / Taplin, James / Taylor, David M / Thomas, Duncan W / Toirambe, Benjamin / Mukendi, John Tshibamba / Tuagben, Darlington / Umunay, Peter M / van der Heijden, Geertje M F / Verbeeck, Hans / Vleminckx, Jason / Willcock, Simon / Wöll, Hannsjörg / Woods, John T / Zemagho, Lise

Nature

2020 Volume 579, Issue 7797, Page(s) 80–87

Abstract: Structurally intact tropical forests sequestered about half of the global terrestrial carbon uptake over the 1990s and early 2000s, removing about 15 per cent of anthropogenic carbon dioxide ... ...

Abstract	Structurally intact tropical forests sequestered about half of the global terrestrial carbon uptake over the 1990s and early 2000s, removing about 15 per cent of anthropogenic carbon dioxide emissions
MeSH term(s)	Africa ; Atmosphere/chemistry ; Biomass ; Brazil ; Carbon Dioxide/metabolism ; Carbon Sequestration ; Droughts ; Forests ; History, 20th Century ; History, 21st Century ; Models, Theoretical ; Temperature ; Trees/metabolism ; Tropical Climate
Chemical Substances	Carbon Dioxide (142M471B3J)
Language	English
Publishing date	2020-03-04
Publishing country	England
Document type	Historical Article ; Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	120714-3
ISSN	1476-4687 ; 0028-0836
ISSN (online)	1476-4687
ISSN	0028-0836
DOI	10.1038/s41586-020-2035-0
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

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