Results 11 to 20 of about 359,084 (307)

Migration and Species Diversity in the Tropics [PDF]

open access: yesProceedings of the National Academy of Sciences, 1974
If the young of a dominant species are subjected to disproportionately heavy predation, this, together with a limitation on food, can promote a high species diversity. This is seen among tropical birds, which are simultaneously exposed to both conditions to a far greater degree than are Temperate Zone species.
P H, Klopfer   +3 more
openaire   +2 more sources

Environmental Synergisms and Extinctions of Tropical Species [PDF]

open access: yesConservation Biology, 2009
Abstract:  Environmental synergisms may pose the greatest threat to tropical biodiversity. Using recently updated data sets from the International Union for Conservation of Nature (IUCN) Red List, we evaluated the incidence of perceived threats to all known mammal, bird, and amphibian species in tropical forests.
Laurance, William F., Useche, Diana C.
openaire   +4 more sources

Inferring species interactions in tropical forests [PDF]

open access: yesProceedings of the National Academy of Sciences, 2009
We present 2 distinct and independent approaches to deduce the effective interaction strengths between species and apply it to the 20 most abundant species in the long-term 50-ha plot on Barro Colorado Island, Panama. The first approach employs the principle of maximum entropy, and the second uses a stochastic birth–death model.
VOLKOV I   +3 more
openaire   +3 more sources

Herbicide Selectivity in Tropical Ornamental Species [PDF]

open access: yesPlanta Daninha, 2016
ABSTRACT This study evaluated the selectivity of herbicides applied post-emergence on ornamental plants of Alpinia purpurata, Strelitzia reginae and Heliconia psittacorum. The study was conducted in two seasons. The experimental design was completely randomized with four replications.
Queiroz, J. R. G.   +2 more
openaire   +6 more sources

Predicting species diversity in tropical forests [PDF]

open access: yesProceedings of the National Academy of Sciences, 2000
A fundamental question in ecology is how many species occur within a given area. Despite the complexity and diversity of different ecosystems, there exists a surprisingly simple, approximate answer: the number of species is proportional to the size of the area raised to some exponent. The exponent often turns out to be roughly 1/4.
Plotkin, Joshua B   +12 more
openaire   +3 more sources

Measuring the conservation value of tropical primary forests : the effect of occasional species on estimates of biodiversity uniqueness [PDF]

open access: yes, 2010
Background Developing effective conservation plans for multi-functional landscapes requires an accurate knowledge of the relative conservation value of different land-uses.
Carlos A Peres   +12 more
core   +1 more source

Upper temperature limits of tropical marine ectotherms: global warming implications [PDF]

open access: yes, 2011
Animal physiology, ecology and evolution are affected by temperature and it is expected that community structure will be strongly influenced by global warming.
Peck, Lloyd S.   +27 more
core   +1 more source

Upscaling species richness and abundances in tropical forests [PDF]

open access: yesScience Advances, 2017
We provide a framework to upscale biodiversity in tropical forests from local samples of species richness and abundances.
A. Tovo   +7 more
openaire   +4 more sources

Detectability in audio-visual surveys of tropical rainforest birds : the influence of species, weather and habitat characteristics [PDF]

open access: yes, 2015
This research was funded by the Australian Government’s National Environmental Research Program, the Stuart Leslie Bird Research Award from Birds Australia (http://www.birdsaustralia.com.au/), the Earthwatch Institute (http://www.earthwatch.org/australia/
Shoo, Luke P.   +11 more
core   +1 more source

Local and regional rarity in a diverse tropical fish assemblage [PDF]

open access: yes, 2012
Because most species in an ecological assemblage are rare, much of the species richness we value is due to taxa with few individuals or a restricted distribution.
Sobansky, M   +7 more
core   +1 more source

Home - About - Disclaimer - Privacy