LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 5 of total 5

Search options

  1. Article: Synergy between climate and human land-use maintained open vegetation in southwest Madagascar over the last millennium

    Razanatsoa, Estelle / Gillson, Lindsey / Virah-Sawmy, Malika / Woodborne, Stephan

    Holocene. 2022 Feb., v. 32, no. 1-2

    2022  

    Abstract: Madagascar experienced environmental change during the Late-Holocene, and the relative importance of climatic and anthropogenic drivers is still the subject of an ongoing debate. Using palaeoecological records from the southwest region at Lake Longiza, ... ...

    Abstract Madagascar experienced environmental change during the Late-Holocene, and the relative importance of climatic and anthropogenic drivers is still the subject of an ongoing debate. Using palaeoecological records from the southwest region at Lake Longiza, we provide additional records to elucidate the complex history of the island and to identify the changes that occurred in the tropical dry forest during the Late-Holocene. The data showed vegetation changes associated with climate variability until AD 900 as reflected by the variation in grass, dry-adapted taxa, deciduous trees, and isotope records. An increasing effect of human activities was recorded, indicated by increased coprophilous spore concentration, as a result of a shift from foraging to pastoralism leading to further opening of the ecosystem from AD 980. At the same time, the regional palaeoclimate record showed drier conditions from around AD 1000, which could have accentuated the changes in vegetation structure. More open vegetation was likely maintained by increased use of fire and herbivory around the area, as indicated by the multiple peaks in the charcoal and spore records. Since AD 1900, the pollen record from the southwest region showed that the ecosystem became increasingly open with an increased abundance of grass, pioneer taxa, and reduced diversity, which was linked to a simultaneous effect of climate and agropastoralism activities. Our study suggests that the dry conditions around AD 950 initiated the replacement of forest-dominant vegetation with grass-dominant communities over the last millennium, depicted as an open ecosystem at present. Subsequent changes in subsistence activities would have further maintained an open-structured ecosystem.
    Keywords Holocene epoch ; agropastoralism ; charcoal ; climate ; ecosystems ; grasses ; herbivores ; humans ; isotopes ; lakes ; land use ; paleoclimatology ; paleoecology ; pollen ; spores ; tropical dry forests ; vegetation structure ; Madagascar
    Language English
    Dates of publication 2022-02
    Size p. 57-69.
    Publishing place SAGE Publications
    Document type Article
    ZDB-ID 2027956-5
    ISSN 1477-0911 ; 0959-6836
    ISSN (online) 1477-0911
    ISSN 0959-6836
    DOI 10.1177/09596836211041731
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article: Fostering local involvement for biodiversity conservation in tropical regions: Lessons from Madagascar during the COVID‐19 pandemic

    Razanatsoa, Estelle / Andriantsaralaza, Seheno / Holmes, Sheila M. / Rakotonarivo, O. Sarobidy / Ratsifandrihamanana, Anitry N. / Randriamiharisoa, Lalatiana / Ravaloharimanitra, Maholy / Ramahefamanana, Narindra / Tahirinirainy, Dinasoa / Raharimampionona, Jeannie

    Biotropica. 2021 July, v. 53, no. 4

    2021  

    Abstract: Tropical ecosystems host a large proportion of global biodiversity and directly support the livelihoods of many of the world's poorest, and often marginalized, people through ecosystem goods and services and conservation employment. The coronavirus ... ...

    Abstract Tropical ecosystems host a large proportion of global biodiversity and directly support the livelihoods of many of the world's poorest, and often marginalized, people through ecosystem goods and services and conservation employment. The coronavirus pandemic has challenged existing conservation structures and management but provides an opportunity to re‐examine strategies and research approaches across the tropics to build resilience for future crises. Based on the personal experiences of conservation leaders, managers, and researchers from Madagascar during this period, we discuss the coping strategies of multiple biodiversity conservation organizations during the coronavirus pandemic. We highlight the vital role of local communities in building and maintaining resilient conservation practices that are robust to global disruptions such as the COVID‐19 crisis. We argue that the integration of local experts and communities in conservation, research, and financial decision‐making is essential to a strong foundation for biodiversity conservation in developing countries to stand up to future environmental, political, and health crises. This integration could be achieved through the support of training and capacity building of local researchers and community members and these actions would also enhance the development of strong, equitable long‐term collaborations with international communities. Equipped with such capacity, conservationists and researchers from these regions could establish long‐term biodiversity conservation strategies that are adapted to local context, and communities could flexibly balance biodiversity and livelihood needs as circumstances change, including weathering the isolation and financial challenges of local or global crises.
    Keywords COVID-19 infection ; biodiversity ; biodiversity conservation ; decision making ; ecosystems ; employment ; livelihood ; pandemic ; politics ; Madagascar
    Language English
    Dates of publication 2021-07
    Size p. 994-1003.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 2052061-X
    ISSN 1744-7429 ; 0006-3606
    ISSN (online) 1744-7429
    ISSN 0006-3606
    DOI 10.1111/btp.12967
    Database NAL-Catalogue (AGRICOLA)

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  3. Article: Fostering local involvement for biodiversity conservation in tropical regions: Lessons from Madagascar during the COVID-19 pandemic.

    Razanatsoa, Estelle / Andriantsaralaza, Seheno / Holmes, Sheila M / Rakotonarivo, O Sarobidy / Ratsifandrihamanana, Anitry N / Randriamiharisoa, Lalatiana / Ravaloharimanitra, Maholy / Ramahefamanana, Narindra / Tahirinirainy, Dinasoa / Raharimampionona, Jeannie

    Biotropica

    2021  Volume 53, Issue 4, Page(s) 994–1003

    Abstract: Tropical ecosystems host a large proportion of global biodiversity and directly support the livelihoods of many of the world's poorest, and often marginalized, people through ecosystem goods and services and conservation employment. The coronavirus ... ...

    Abstract Tropical ecosystems host a large proportion of global biodiversity and directly support the livelihoods of many of the world's poorest, and often marginalized, people through ecosystem goods and services and conservation employment. The coronavirus pandemic has challenged existing conservation structures and management but provides an opportunity to re-examine strategies and research approaches across the tropics to build resilience for future crises. Based on the personal experiences of conservation leaders, managers, and researchers from Madagascar during this period, we discuss the coping strategies of multiple biodiversity conservation organizations during the coronavirus pandemic. We highlight the vital role of local communities in building and maintaining resilient conservation practices that are robust to global disruptions such as the COVID-19 crisis. We argue that the integration of local experts and communities in conservation, research, and financial decision-making is essential to a strong foundation for biodiversity conservation in developing countries to stand up to future environmental, political, and health crises. This integration could be achieved through the support of training and capacity building of local researchers and community members and these actions would also enhance the development of strong, equitable long-term collaborations with international communities. Equipped with such capacity, conservationists and researchers from these regions could establish long-term biodiversity conservation strategies that are adapted to local context, and communities could flexibly balance biodiversity and livelihood needs as circumstances change, including weathering the isolation and financial challenges of local or global crises.
    Language English
    Publishing date 2021-05-27
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2052061-X
    ISSN 1744-7429 ; 0006-3606
    ISSN (online) 1744-7429
    ISSN 0006-3606
    DOI 10.1111/btp.12967
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  4. Article ; Online: Madagascar's extraordinary biodiversity: Evolution, distribution, and use.

    Antonelli, Alexandre / Smith, Rhian J / Perrigo, Allison L / Crottini, Angelica / Hackel, Jan / Testo, Weston / Farooq, Harith / Torres Jiménez, Maria F / Andela, Niels / Andermann, Tobias / Andriamanohera, Andotiana M / Andriambololonera, Sylvie / Bachman, Steven P / Bacon, Christine D / Baker, William J / Belluardo, Francesco / Birkinshaw, Chris / Borrell, James S / Cable, Stuart /
    Canales, Nataly A / Carrillo, Juan D / Clegg, Rosie / Clubbe, Colin / Cooke, Robert S C / Damasco, Gabriel / Dhanda, Sonia / Edler, Daniel / Faurby, Søren / de Lima Ferreira, Paola / Fisher, Brian L / Forest, Félix / Gardiner, Lauren M / Goodman, Steven M / Grace, Olwen M / Guedes, Thaís B / Henniges, Marie C / Hill, Rowena / Lehmann, Caroline E R / Lowry, Porter P / Marline, Lovanomenjanahary / Matos-Maraví, Pável / Moat, Justin / Neves, Beatriz / Nogueira, Matheus G C / Onstein, Renske E / Papadopulos, Alexander S T / Perez-Escobar, Oscar A / Phelps, Leanne N / Phillipson, Peter B / Pironon, Samuel / Przelomska, Natalia A S / Rabarimanarivo, Marina / Rabehevitra, David / Raharimampionona, Jeannie / Rajaonah, Mamy Tiana / Rajaonary, Fano / Rajaovelona, Landy R / Rakotoarinivo, Mijoro / Rakotoarisoa, Amédée A / Rakotoarisoa, Solofo E / Rakotomalala, Herizo N / Rakotonasolo, Franck / Ralaiveloarisoa, Berthe A / Ramirez-Herranz, Myriam / Randriamamonjy, Jean Emmanuel N / Randriamboavonjy, Tianjanahary / Randrianasolo, Vonona / Rasolohery, Andriambolantsoa / Ratsifandrihamanana, Anitry N / Ravololomanana, Noro / Razafiniary, Velosoa / Razanajatovo, Henintsoa / Razanatsoa, Estelle / Rivers, Malin / Sayol, Ferran / Silvestro, Daniele / Vorontsova, Maria S / Walker, Kim / Walker, Barnaby E / Wilkin, Paul / Williams, Jenny / Ziegler, Thomas / Zizka, Alexander / Ralimanana, Hélène

    Science (New York, N.Y.)

    2022  Volume 378, Issue 6623, Page(s) eabf0869

    Abstract: Madagascar's biota is hyperdiverse and includes exceptional levels of endemicity. We review the current state of knowledge on Madagascar's past and current terrestrial and freshwater biodiversity by compiling and presenting comprehensive data on species ... ...

    Abstract Madagascar's biota is hyperdiverse and includes exceptional levels of endemicity. We review the current state of knowledge on Madagascar's past and current terrestrial and freshwater biodiversity by compiling and presenting comprehensive data on species diversity, endemism, and rates of species description and human uses, in addition to presenting an updated and simplified map of vegetation types. We report a substantial increase of records and species new to science in recent years; however, the diversity and evolution of many groups remain practically unknown (e.g., fungi and most invertebrates). Digitization efforts are increasing the resolution of species richness patterns and we highlight the crucial role of field- and collections-based research for advancing biodiversity knowledge and identifying gaps in our understanding, particularly as species richness corresponds closely to collection effort. Phylogenetic diversity patterns mirror that of species richness and endemism in most of the analyzed groups. We highlight humid forests as centers of diversity and endemism because of their role as refugia and centers of recent and rapid radiations. However, the distinct endemism of other areas, such as the grassland-woodland mosaic of the Central Highlands and the spiny forest of the southwest, is also biologically important despite lower species richness. The documented uses of Malagasy biodiversity are manifold, with much potential for the uncovering of new useful traits for food, medicine, and climate mitigation. The data presented here showcase Madagascar as a unique "living laboratory" for our understanding of evolution and the complex interactions between people and nature. The gathering and analysis of biodiversity data must continue and accelerate if we are to fully understand and safeguard this unique subset of Earth's biodiversity.
    MeSH term(s) Humans ; Biodiversity ; Biota ; Forests ; Madagascar ; Phylogeny ; Biological Evolution
    Language English
    Publishing date 2022-12-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.abf0869
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 27: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MG 77: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  5. Article ; Online: Madagascar's extraordinary biodiversity: Threats and opportunities.

    Ralimanana, Hélène / Perrigo, Allison L / Smith, Rhian J / Borrell, James S / Faurby, Søren / Rajaonah, Mamy Tiana / Randriamboavonjy, Tianjanahary / Vorontsova, Maria S / Cooke, Robert S C / Phelps, Leanne N / Sayol, Ferran / Andela, Niels / Andermann, Tobias / Andriamanohera, Andotiana M / Andriambololonera, Sylvie / Bachman, Steven P / Bacon, Christine D / Baker, William J / Belluardo, Francesco /
    Birkinshaw, Chris / Cable, Stuart / Canales, Nataly A / Carrillo, Juan D / Clegg, Rosie / Clubbe, Colin / Crottini, Angelica / Damasco, Gabriel / Dhanda, Sonia / Edler, Daniel / Farooq, Harith / de Lima Ferreira, Paola / Fisher, Brian L / Forest, Félix / Gardiner, Lauren M / Goodman, Steven M / Grace, Olwen M / Guedes, Thaís B / Hackel, Jan / Henniges, Marie C / Hill, Rowena / Lehmann, Caroline E R / Lowry, Porter P / Marline, Lovanomenjanahary / Matos-Maraví, Pável / Moat, Justin / Neves, Beatriz / Nogueira, Matheus G C / Onstein, Renske E / Papadopulos, Alexander S T / Perez-Escobar, Oscar A / Phillipson, Peter B / Pironon, Samuel / Przelomska, Natalia A S / Rabarimanarivo, Marina / Rabehevitra, David / Raharimampionona, Jeannie / Rajaonary, Fano / Rajaovelona, Landy R / Rakotoarinivo, Mijoro / Rakotoarisoa, Amédée A / Rakotoarisoa, Solofo E / Rakotomalala, Herizo N / Rakotonasolo, Franck / Ralaiveloarisoa, Berthe A / Ramirez-Herranz, Myriam / Randriamamonjy, Jean Emmanuel N / Randrianasolo, Vonona / Rasolohery, Andriambolantsoa / Ratsifandrihamanana, Anitry N / Ravololomanana, Noro / Razafiniary, Velosoa / Razanajatovo, Henintsoa / Razanatsoa, Estelle / Rivers, Malin / Silvestro, Daniele / Testo, Weston / Torres Jiménez, Maria F / Walker, Kim / Walker, Barnaby E / Wilkin, Paul / Williams, Jenny / Ziegler, Thomas / Zizka, Alexander / Antonelli, Alexandre

    Science (New York, N.Y.)

    2022  Volume 378, Issue 6623, Page(s) eadf1466

    Abstract: Madagascar's unique biota is heavily affected by human activity and is under intense threat. Here, we review the current state of knowledge on the conservation status of Madagascar's terrestrial and freshwater biodiversity by presenting data and analyses ...

    Abstract Madagascar's unique biota is heavily affected by human activity and is under intense threat. Here, we review the current state of knowledge on the conservation status of Madagascar's terrestrial and freshwater biodiversity by presenting data and analyses on documented and predicted species-level conservation statuses, the most prevalent and relevant threats, ex situ collections and programs, and the coverage and comprehensiveness of protected areas. The existing terrestrial protected area network in Madagascar covers 10.4% of its land area and includes at least part of the range of the majority of described native species of vertebrates with known distributions (97.1% of freshwater fishes, amphibians, reptiles, birds, and mammals combined) and plants (67.7%). The overall figures are higher for threatened species (97.7% of threatened vertebrates and 79.6% of threatened plants occurring within at least one protected area). International Union for Conservation of Nature (IUCN) Red List assessments and Bayesian neural network analyses for plants identify overexploitation of biological resources and unsustainable agriculture as the most prominent threats to biodiversity. We highlight five opportunities for action at multiple levels to ensure that conservation and ecological restoration objectives, programs, and activities take account of complex underlying and interacting factors and produce tangible benefits for the biodiversity and people of Madagascar.
    MeSH term(s) Animals ; Humans ; Bayes Theorem ; Madagascar ; Biodiversity ; Endangered Species ; Biota ; Mammals
    Language English
    Publishing date 2022-12-02
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.adf1466
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 27: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)
    Zs.MG 77: Show issues

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

To top