Interplay of competition and facilitation in grazing succession by migrant Serengeti herbivores
Interplay of competition and facilitation in grazing succession by migrant Serengeti herbivores
复制标题
塞伦盖蒂迁徙食草动物放牧演替过程中竞争与促进的相互作用
DOI:
10.1126/science.adg0744
复制
发表时间:
2024
期刊:
影响因子:
56.9
通讯作者:
Anderson T
中科院分区:
文献类型:
--
作者:
Anderson T
Competition, facilitation, and predation offer alternative explanations for successional patterns of migratory herbivores. However, these interactions are difficult to measure, leaving uncertainty about the mechanisms underlying body-size-dependent grazing—and even whether succession occurs at all. We used data from an 8-year camera-trap survey, GPS-collared herbivores, and fecal DNA metabarcoding to analyze the timing, arrival order, and interactions among migratory grazers in Serengeti National Park. Temporal grazing succession is characterized by a “push-pull” dynamic: Competitive grazing nudges zebra ahead of co-migrating wildebeest, whereas grass consumption by these large-bodied migrants attracts trailing, small-bodied gazelle that benefit from facilitation. “Natural experiments” involving intense wildfires and rainfall respectively disrupted and strengthened these effects. Our results highlight a balance between facilitative and competitive forces in co-regulating large-scale ungulate migrations.
登录
查看更多内容
DOI:
10.1098/rstb.2015.0314
发表时间:
2016-09-19
影响因子:
6.3
作者:
Anderson, T. Michael;White, Staci;Packer, Craig
通讯作者:
Packer, Craig
影响因子:
5.5
作者:
Anderson, T. Michael;Shaw, Joey;Olff, Han
通讯作者:
Olff, Han
影响因子:
6.1
作者:
Hopcraft, J. Grant C.;Morales, J. M.;Haydon, Daniel T.
通讯作者:
Haydon, Daniel T.
影响因子:
3.9
作者:
Anderson, T. Michael;Metzger, Kristine L.;McNaughton, Samuel J.
通讯作者:
McNaughton, Samuel J.
DOI:
10.1073/pnas.1503283112
发表时间:
2015-06-30
影响因子:
11.1
作者:
Kartzinel, Tyler R.;Chen, Patricia A.;Pringle, Robert M.
通讯作者:
Pringle, Robert M.