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  1. Article ; Online: Plot-level estimates of aboveground biomass and soil organic carbon stocks from Nepal's forest inventory.

    Khanal, Shiva / Boer, Matthias M

    Scientific data

    2023  Volume 10, Issue 1, Page(s) 406

    Abstract: Given the contribution of deforestation and forest degradation to the global carbon cycle, forest resources are critical to mitigating the global climate change effects. Improved forest monitoring across different biomes is important to understand forest ...

    Abstract Given the contribution of deforestation and forest degradation to the global carbon cycle, forest resources are critical to mitigating the global climate change effects. Improved forest monitoring across different biomes is important to understand forest dynamics better and improve global projections of future atmospheric CO
    Language English
    Publishing date 2023-06-24
    Publishing country England
    Document type Dataset ; Journal Article
    ZDB-ID 2775191-0
    ISSN 2052-4463 ; 2052-4463
    ISSN (online) 2052-4463
    ISSN 2052-4463
    DOI 10.1038/s41597-023-02314-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Mapping soil organic carbon stocks in Nepal's forests.

    Khanal, Shiva / Nolan, Rachael H / Medlyn, Belinda E / Boer, Matthias M

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 8090

    Abstract: Comprehensive forest carbon accounting requires reliable estimation of soil organic carbon (SOC) stocks. Despite being an important carbon pool, limited information is available on SOC stocks in global forests, particularly for forests in mountainous ... ...

    Abstract Comprehensive forest carbon accounting requires reliable estimation of soil organic carbon (SOC) stocks. Despite being an important carbon pool, limited information is available on SOC stocks in global forests, particularly for forests in mountainous regions, such as the Central Himalayas. The availability of consistently measured new field data enabled us to accurately estimate forest soil organic carbon (SOC) stocks in Nepal, addressing a previously existing knowledge gap. Our method involved modelling plot-based estimates of forest SOC using covariates related to climate, soil, and topographic position. Our quantile random forest model resulted in the high spatial resolution prediction of Nepal's national forest SOC stock together with prediction uncertainties. Our spatially explicit forest SOC map showed the high SOC levels in high-elevation forests and a significant underrepresentation of these stocks in global-scale assessments. Our results offer an improved baseline on the distribution of total carbon in the forests of the Central Himalayas. The benchmark maps of predicted forest SOC and associated errors, along with our estimate of 494 million tonnes (SE = 16) of total SOC in the topsoil (0-30 cm) of forested areas in Nepal, carry important implications for understanding the spatial variability of forest SOC in mountainous regions with complex terrains.
    Language English
    Publishing date 2023-05-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-34247-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Book ; Conference proceedings: Greenhouse impact on cold climate ecosystems and landscapes

    Boer, Matthias

    selected papers of the European Conference on Landscape Ecological Impact of Climatic Change, Lunteren, The Netherlands, December 3 - 7, 1989

    (Catena : Supplement ; 22)

    1992  

    Title variant greenhouse-impact cold-climate
    Event/congress European Conference on Landscape Ecological Impact of Climatic Change (1989, Lunteren)
    Author's details M. Boer ... (ed.)
    Series title Catena : Supplement ; 22
    Catena
    Catena ; Supplement
    Collection Catena
    Catena ; Supplement
    Keywords Boreal ; Treibhauseffekt ; Ökosystem
    Subject Biosystem ; Ökosysteme ; Glashauseffekt ; Glashauswirkung
    Language English
    Size 151 S. : Ill., graph. Darst., Kt.
    Publisher Catena-Verl
    Publishing place Cremlingen-Destedt
    Publishing country Germany
    Document type Book ; Conference proceedings
    HBZ-ID HT004385408
    ISBN 3-923381-31-X ; 978-3-923381-31-9
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    928/2324 available for loan (reading room) Freihandmagazin (U1)

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  4. Book ; Conference proceedings: Landscape ecological impact of climatic change

    Boer, Matthias

    proceedings of a European Conference [on Landscape Ecological Impact of Climatic Change], Lunteren, the Netherlands, 3 - 7 December 1989

    1990  

    Institution Landbouwuniversiteit Wageningen
    Event/congress European Conference on Landscape Ecological Impact of Climatic Change (1989, Lunteren)
    Author's details Agricultural University Wageningen ... Ed.: Matthias M. Boer
    Keywords Landschaftsökologie ; Klimaänderung
    Subject Klima ; Klimawandel ; Klimaveränderung ; Klimawechsel
    Size XVI, 429 S. : graph. Darst., Kt.
    Publisher IOS Press
    Publishing place Amsterdam u.a.
    Publishing country Netherlands
    Document type Book ; Conference proceedings
    HBZ-ID HT004350269
    ISBN 90-5199-023-5 ; 978-90-5199-023-2
    Database Catalogue ZB MED Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Shelf markLoan statusLocation
    928/1698 available for loan (reading room) Freihandmagazin (U1)

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  5. Article ; Online: Pyrogeography in flux: Reorganization of Australian fire regimes in a hotter world.

    Cunningham, Calum X / Williamson, Grant J / Nolan, Rachael H / Teckentrup, Lina / Boer, Matthias M / Bowman, David M J S

    Global change biology

    2024  Volume 30, Issue 1, Page(s) e17130

    Abstract: Changes to the spatiotemporal patterns of wildfire are having profound implications for ecosystems and society globally, but we have limited understanding of the extent to which fire regimes will reorganize in a warming world. While predicting regime ... ...

    Abstract Changes to the spatiotemporal patterns of wildfire are having profound implications for ecosystems and society globally, but we have limited understanding of the extent to which fire regimes will reorganize in a warming world. While predicting regime shifts remains challenging because of complex climate-vegetation-fire feedbacks, understanding the climate niches of fire regimes provides a simple way to identify locations most at risk of regime change. Using globally available satellite datasets, we constructed 14 metrics describing the spatiotemporal dimensions of fire and then delineated Australia's pyroregions-the geographic area encapsulating a broad fire regime. Cluster analysis revealed 18 pyroregions, notably including the (1) high-intensity, infrequent fires of the temperate forests, (2) high-frequency, smaller fires of the tropical savanna, and (3) low-intensity, diurnal, human-engineered fires of the agricultural zones. To inform the risk of regime shifts, we identified locations where the climate under three CMIP6 scenarios is projected to shift (i) beyond each pyroregion's historical climate niche, and (ii) into climate space that is novel to the Australian continent. Under middle-of-the-road climate projections (SSP2-4.5), an average of 65% of the extent of the pyroregions occurred beyond their historical climate niches by 2081-2100. Further, 52% of pyroregion extents, on average, were projected to occur in climate space without present-day analogues on the Australian continent, implying high risk of shifting to states that also lack present-day counterparts. Pyroregions in tropical and hot-arid climates were most at risk of shifting into both locally and continentally novel climate space because (i) their niches are narrower than southern temperate pyroregions, and (ii) their already-hot climates lead to earlier departure from present-day climate space. Such a shift implies widespread risk of regime shifts and the emergence of no-analogue fire regimes. Our approach can be applied to other regions to assess vulnerability to rapid fire regime change.
    MeSH term(s) Humans ; Ecosystem ; Australia ; Forests ; Fires ; Climate ; Climate Change
    Language English
    Publishing date 2024-01-25
    Publishing country England
    Document type Journal Article
    ZDB-ID 1281439-8
    ISSN 1365-2486 ; 1354-1013
    ISSN (online) 1365-2486
    ISSN 1354-1013
    DOI 10.1111/gcb.17130
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Bonn / Germany

    Z 6338: Show issues

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  6. Book ; Thesis: Thema: Über die Auswirkungen der Behandlung von Kopf-Hals-Tumoren auf die Schilddrüsenfunktion

    Boer, Matthias de

    1992  

    Title variant Über die Auswirkungen der Behandlung von Kopf-Hals-Tumoren auf die Schilddrüsenfunktion
    Author's details vorgelegt von Matthias de Boer
    Size 47 Bl. : graph. Darst.
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Bochum, Univ., Diss., 1992
    HBZ-ID HT004360129
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    93 E 919 order for loan Magazin

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  7. Article ; Online: Ground-based counting methods underestimate true numbers of a threatened colonial mammal: an evaluation using drone-based thermal surveys as a reference

    McCarthy, Eliane D. / Martin, John M. / Boer, Matthias M. / Welbergen, Justin A.

    Wildlife Research. 2022, v. 50, no. 6 p.484-493

    2022  

    Abstract: Context Accurate and precise monitoring practises are key for effective wildlife conservation management; providing reliable estimates of spatiotemporal changes in species abundance on which sound decision-making can be based. Advancements in drone and ... ...

    Abstract Context Accurate and precise monitoring practises are key for effective wildlife conservation management; providing reliable estimates of spatiotemporal changes in species abundance on which sound decision-making can be based. Advancements in drone and satellite technology are providing new standards for survey accuracy and precision and have great potential for enhancing population monitoring of numerous difficult to survey species. Flying-foxes (Pteropus spp.) are large bats that roost in groups of a few hundred to many thousands in the canopies of trees, where they are difficult to census accurately and precisely by human observers. Globally, 35 of the 64 flying-fox species are listed as threatened under the IUCN Red List of Threatened Species, and reliable monitoring methods are needed for the effective management of this ecologically important group. Aims Recently, we showed that drone-acquired thermal imagery can be used to count flying-foxes in their roost with high accuracy and precision. In the present study, we aimed to assess the accuracy and precision of whole colony counts derived from ground-based counting methods against reference counts derived from drone-acquired thermal imagery. Methods We evaluated the relationship between ground-based counts by two groups of human observers to highly accurate and precise counts derived from drone-acquired thermal orthomosaics for 25 counts conducted across seven flying-fox roosts throughout the Greater Sydney region, Australia. Key results We found that ground-based counts by human observers were positively correlated with those obtained from concurrent drone-acquired thermal imagery. However, drone-acquired estimates of colony size were 2.05 and 1.92times higher than ground-based counts by the experimenter and Australian government counters respectively. When compared against drone-acquired reference counts, the precision (coefficient of variation) of ground-based counts was 26.3% when conducted by a single counter and 55.1% when conducted by multiple counters. Conclusions Our research indicates that ground-based counting methods underestimate true population sizes by substantial margins and have limited precision. Drone-based monitoring provides highly accurate and precise population estimates, and thus is expected to yield more reliable information on flying-fox abundance and allow for trends to be established over shorter timescales. Implications Using ground counting methods alone, population trends can only be established with significance after protracted periods of monitoring. Incorporating the use of thermal drones into current monitoring practises would enhance the capacity to detect population trends earlier and more accurately, so that conservation management can more effectively respond.
    Keywords Pteropus ; decision making ; humans ; research ; satellites ; species abundance ; surveys ; thermography ; threatened species ; wildlife ; Australia ; bat ; Chiroptera ; colonial animal ; drone ; infrared imagery ; RPAS ; survey error ; thermal ; wildlife surveys
    Language English
    Size p. 484-493.
    Publishing place CSIRO Publishing
    Document type Article ; Online
    ZDB-ID 1070380-9
    ISSN 1035-3712
    ISSN 1035-3712
    DOI 10.1071/WR21120
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 1161: Show issues

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  8. Article ; Online: The 2019-2020 Australian forest fires are a harbinger of decreased prescribed burning effectiveness under rising extreme conditions.

    Clarke, Hamish / Cirulis, Brett / Penman, Trent / Price, Owen / Boer, Matthias M / Bradstock, Ross

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 11871

    Abstract: There is an imperative for fire agencies to quantify the potential for prescribed burning to mitigate risk to life, property and environmental values while facing changing climates. The 2019-2020 Black Summer fires in eastern Australia raised questions ... ...

    Abstract There is an imperative for fire agencies to quantify the potential for prescribed burning to mitigate risk to life, property and environmental values while facing changing climates. The 2019-2020 Black Summer fires in eastern Australia raised questions about the effectiveness of prescribed burning in mitigating risk under unprecedented fire conditions. We performed a simulation experiment to test the effects of different rates of prescribed burning treatment on risks posed by wildfire to life, property and infrastructure. In four forested case study landscapes, we found that the risks posed by wildfire were substantially higher under the fire weather conditions of the 2019-2020 season, compared to the full range of long-term historic weather conditions. For area burnt and house loss, the 2019-2020 conditions resulted in more than a doubling of residual risk across the four landscapes, regardless of treatment rate (mean increase of 230%, range 164-360%). Fire managers must prepare for a higher level of residual risk as climate change increases the likelihood of similar or even more dangerous fire seasons.
    MeSH term(s) Australia ; Climate Change ; Ecosystem ; Fires ; Forests ; Wildfires
    Language English
    Publishing date 2022-07-13
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-15262-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Fire activity as measured by burned area reveals weak effects of ENSO in China.

    Resco de Dios, Víctor / Yao, Yinan / Cunill Camprubí, Àngel / Boer, Matthias M

    Nature communications

    2022  Volume 13, Issue 1, Page(s) 4316

    MeSH term(s) China ; Ecosystem ; Fires ; Trees
    Language English
    Publishing date 2022-07-28
    Publishing country England
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-022-32013-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Growth enhancements of elevated atmospheric [CO2] are reduced under drought‐like conditions in temperate eucalypts

    Bendall, Eli R. / Bedward, Michael / Boer, Matthias / Clarke, Hamish / Collins, Luke / Leigh, Andrea / Bradstock, Ross A.

    Functional ecology. 2022 July, v. 36, no. 7

    2022  

    Abstract: Elevated atmospheric [CO₂] (‘eCO₂’) may alter species composition within vegetation types by favouring the growth of some species over others. However, other related changes in climate conditions, such as increased frequency and severity of drought, may ... ...

    Abstract Elevated atmospheric [CO₂] (‘eCO₂’) may alter species composition within vegetation types by favouring the growth of some species over others. However, other related changes in climate conditions, such as increased frequency and severity of drought, may reduce eCO₂ fertilisation effects on plant growth. For many species, it is not known if responses will reflect variability in trait adaptations due to environment. We grew seedlings of nine species of eucalypts indicative of three regional vegetation types (representing a mesic–xeric ecosystem gradient) under two CO₂ concentrations (400 parts per million; 640 ppm, i.e. eCO₂) and two watering regimes (well‐watered; drought‐like conditions). Elevated CO₂ increased biomass accumulation but drought reduced this effect, with mesic species experiencing larger relative reductions. Elevated CO₂ increased the size of storage organs used during resprouting, in the absence of drought. Typical drought responses, such as increased leaf mass per unit area and root mass ratio, were more pronounced in xeric species and were reduced under eCO₂. Seedling growth and resprouting may be enhanced by eCO₂, suggesting continued dominance of resprouting species in disturbance‐prone ecosystems, although severe drought is likely to offset eCO₂ fertilisation. Xeric species may cope with drought more effectively under eCO₂ than mesic species due to resource acquisition and storage traits that are more responsive. Read the free Plain Language Summary for this article on the Journal blog.
    Keywords Eucalyptus ; biomass production ; carbon dioxide ; drought ; ecosystems ; leaf mass ; seedling growth ; species diversity
    Language English
    Dates of publication 2022-07
    Size p. 1542-1558.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 2020307-X
    ISSN 1365-2435 ; 0269-8463
    ISSN (online) 1365-2435
    ISSN 0269-8463
    DOI 10.1111/1365-2435.14046
    Database NAL-Catalogue (AGRICOLA)

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