Idioma:

Rainfall trends and variation in the Maasai Mara ecosystem and their implications for animal population and biodiversity dynamics

Bartzke, Gundula S ; Ogutu, Joseph O ; Mukhopadhyay, Sabyasachi ; Mtui, Devolent ; Dublin, Holly T ; Piepho, Hans-Peter Rutherford, Suzannah

PloS one, 2018-09, Vol.13 (9), p.e0202814-e0202814 [Periódico revisado por pares]

United States: Public Library of Science

Texto completo disponível

Citações Citado por

Enviar para

Título:
Rainfall trends and variation in the Maasai Mara ecosystem and their implications for animal population and biodiversity dynamics
Autor: Bartzke, Gundula S ; Ogutu, Joseph O ; Mukhopadhyay, Sabyasachi ; Mtui, Devolent ; Dublin, Holly T ; Piepho, Hans-Peter
Rutherford, Suzannah
Assuntos: Analysis ; Animal diseases ; Animal health ; Animal Population Groups ; Animal populations ; Animals ; Annual cycles ; Annual rainfall ; Atmospheric circulation ; Biodiversity ; Biological diversity ; Biology and Life Sciences ; Climate Change ; Climatic changes ; Crop diseases ; Crop science ; Drought ; Dry season ; Earth Sciences ; Ecology and Environmental Sciences ; Ecosystem ; Environmental aspects ; Environmental changes ; Epidemics ; Extreme drought ; Extreme weather ; Floods ; Gauges ; General circulation models ; Grasslands ; Herbivores ; Intergovernmental Panel on Climate Change ; Migration ; Monthly rainfall ; National parks ; Ocean circulation ; Ocean circulation patterns ; Oscillations ; Outbreaks ; Periodic variations ; Periodicity ; Population Dynamics ; Precipitation ; Predation ; Rain ; Rain and rainfall ; Rain gauges ; Rainfall ; Rainfall patterns ; Rainfall trends ; Rainfall variability ; Rainy season ; Seasonal rainfall ; Seasons ; Shores ; Surface water ; Terrestrial ecosystems ; Terrestrial environments ; Trends ; Vegetation
É parte de: PloS one, 2018-09, Vol.13 (9), p.e0202814-e0202814
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Competing Interests: The authors have declared that no competing interests exist.
These authors also contributed equally to this work.
Descrição: Rainfall exerts a controlling influence on the availability and quality of vegetation and surface water for herbivores in African terrestrial ecosystems. We analyse temporal trends and variation in rainfall in the Maasai Mara ecosystem of East Africa and infer their implications for animal population and biodiversity dynamics. The data originated from 15 rain gauges in the Mara region (1965-2015) and one station in Narok Town (1913-2015), in Kenya's Narok County. This is the first comprehensive and most detailed analysis of changes in rainfall in the region of its kind. Our results do not support the current predictions of the International Panel of Climate Change (IPCC) of very likely increases of rainfall over parts of Eastern Africa. The dry season rainfall component increased during 1935-2015 but annual rainfall decreased during 1962-2015 in Narok Town. Monthly rainfall was more stable and higher in the Mara than in Narok Town, likely because the Mara lies closer to the high-precipitation areas along the shores of Lake Victoria. Predominantly deterministic and persistent inter-annual cycles and extremely stable seasonal rainfall oscillations characterize rainfall in the Mara and Narok regions. The frequency of severe droughts increased and floods intensified in the Mara but droughts became less frequent and less severe in Narok Town. The timings of extreme droughts and floods coincided with significant periodicity in rainfall oscillations, implicating strong influences of global atmospheric and oceanic circulation patterns on regional rainfall variability. These changing rainfall patterns have implications for animal population dynamics. The increase in dry season rainfall during 1935-2015 possibly counterbalanced the impacts of resource scarcity generated by the declining annual rainfall during 1965-2015 in Narok Town. However, the increasing rainfall extremes in the Mara can be expected to create conditions conducive to outbreaks of infectious animal diseases and reduced vegetation quality for herbivores, particularly when droughts and floods persist over multiple years. The more extreme wet season rainfall may also alter herbivore space use, including migration patterns.
Editor: United States: Public Library of Science
Idioma: Inglês

Links

View this record in MEDLINE/PubMed

Voltar para lista de resultados

Anterior Resultado 19 Avançar Ir para próxima página

Realização: Logos de Redes Sociais:

Rainfall trends and variation in the Maasai Mara ecosystem and their implications for animal population and biodiversity dynamics

Bartzke, Gundula S ; Ogutu, Joseph O ; Mukhopadhyay, Sabyasachi ; Mtui, Devolent ; Dublin, Holly T ; Piepho, Hans-Peter Rutherford, Suzannah

United States: Public Library of Science

Buscando em bases de dados remotas. Favor aguardar.