Latitudinal gradients
... The refuge theory of Pianka tries to explain the gradient in species diversity from ice age refuges in which speciation rates were fast. This process is thought to result in a multiplication of species numbers in the tropics. In the temperate regions without refuges species number remained more or l ...
... The refuge theory of Pianka tries to explain the gradient in species diversity from ice age refuges in which speciation rates were fast. This process is thought to result in a multiplication of species numbers in the tropics. In the temperate regions without refuges species number remained more or l ...
What`s the fuss about frogs? - Midlands Conservancies Forum
... Why care about amphibians? In the light of the extinction crisis now recognised as one of the biggest challenges facing scientists and conservationists, this question is being asked by society. This is because public perception surrounding amphibians has oftentimes been less than positive. Changing ...
... Why care about amphibians? In the light of the extinction crisis now recognised as one of the biggest challenges facing scientists and conservationists, this question is being asked by society. This is because public perception surrounding amphibians has oftentimes been less than positive. Changing ...
Supplementary
... amount of shared polygon edge was calculated. Crowns with 65% or less of shared crown edge were considered to be agricultural trees. Field delineated crowns are shown in black outlines. Polygons are colored by the percent of shared edge. The SVM model was applied to these polygons to produce a lands ...
... amount of shared polygon edge was calculated. Crowns with 65% or less of shared crown edge were considered to be agricultural trees. Field delineated crowns are shown in black outlines. Polygons are colored by the percent of shared edge. The SVM model was applied to these polygons to produce a lands ...
Chapter 7
... called predators feed on other species called prey. Organisms use their senses their senses to locate objects and prey and to attract pollinators and mates. Some predators are fast enough to catch their prey, some hide and lie in wait, and some inject chemicals to paralyze their prey. ...
... called predators feed on other species called prey. Organisms use their senses their senses to locate objects and prey and to attract pollinators and mates. Some predators are fast enough to catch their prey, some hide and lie in wait, and some inject chemicals to paralyze their prey. ...
APES-Chapter-7-Powerpoint-15th
... called predators feed on other species called prey. Organisms use their senses their senses to locate objects and prey and to attract pollinators and mates. Some predators are fast enough to catch their prey, some hide and lie in wait, and some inject chemicals to paralyze their prey. ...
... called predators feed on other species called prey. Organisms use their senses their senses to locate objects and prey and to attract pollinators and mates. Some predators are fast enough to catch their prey, some hide and lie in wait, and some inject chemicals to paralyze their prey. ...
Taming of a wild law the sorry story of the the Flora and Fauna
... we have the power to change ecosystems radically, we are morally obliged to respect the intrinsic value of other species and to act prudently in their interests. Many people believe that species and natural systems have the right to exist independent of their value to humanity. Draft Flora and Fauna ...
... we have the power to change ecosystems radically, we are morally obliged to respect the intrinsic value of other species and to act prudently in their interests. Many people believe that species and natural systems have the right to exist independent of their value to humanity. Draft Flora and Fauna ...
APchapter24notes
... Behavioral isolation: special signals that attract mates, along with elaborate behaviors unique to a species Temporal isolation: two species breed at different times (day, seasons, years) ...
... Behavioral isolation: special signals that attract mates, along with elaborate behaviors unique to a species Temporal isolation: two species breed at different times (day, seasons, years) ...
Northern Range Margin Shift
... however, there was variation within and between different taxa. The numbers in brackets () indicate the number of species in each group, which varied between intervals. (A) Contains allied species ...
... however, there was variation within and between different taxa. The numbers in brackets () indicate the number of species in each group, which varied between intervals. (A) Contains allied species ...
Nonequilibrium theory
... These models can predict (sort of) future community responses to loss (extinction) and gain (invasion) of species via human activities. ...
... These models can predict (sort of) future community responses to loss (extinction) and gain (invasion) of species via human activities. ...
Invasive Species in the Galapagos Islands Goats and Blackberry
... keystone species. If the prickly pear were to disappear, a domino effect would begin that would likely be catastrophic to animals such as cactus finches, mockingbirds, tortoises, and land iguanas. (Kricher, 2002) Endemic birds, reptiles and other animals would disappear if they were restricted to an ...
... keystone species. If the prickly pear were to disappear, a domino effect would begin that would likely be catastrophic to animals such as cactus finches, mockingbirds, tortoises, and land iguanas. (Kricher, 2002) Endemic birds, reptiles and other animals would disappear if they were restricted to an ...
Species Abundance & Diversity
... As ecosystem changes so too will the distribution of species. If these changes in abiotic factors is abrupt so too will the changes in species thus the appearance of an ecotone. ...
... As ecosystem changes so too will the distribution of species. If these changes in abiotic factors is abrupt so too will the changes in species thus the appearance of an ecotone. ...
Species Richness
... between species assemblages Areas between assemblages are known as ecotones Best seen where there are sharp physical boundaries between species assemblages Between aquatic and terrestrial areas Between distinct soil types Between north and south facing slopes ...
... between species assemblages Areas between assemblages are known as ecotones Best seen where there are sharp physical boundaries between species assemblages Between aquatic and terrestrial areas Between distinct soil types Between north and south facing slopes ...
Anthropology 311 Sample questions and answers for Term Test One
... Allometric relationships are important to identify because they help us to identify when evolution may have produced a distinguishing trait (such as large brain relative to body size in primates), as opposed to a trait that is a consequence of the evolution of something else (such as large brains in ...
... Allometric relationships are important to identify because they help us to identify when evolution may have produced a distinguishing trait (such as large brain relative to body size in primates), as opposed to a trait that is a consequence of the evolution of something else (such as large brains in ...
Phylogeography www.AssignmentPoint.com Phylogeography is the
... these species spread rapidly into newly available habitat. A number of empirical studies find genetic signatures of both animal and plant species that support this scenario of refugia and postglacial expansion. This has occurred both in the tropics (where the main effect of glaciation is increasing ...
... these species spread rapidly into newly available habitat. A number of empirical studies find genetic signatures of both animal and plant species that support this scenario of refugia and postglacial expansion. This has occurred both in the tropics (where the main effect of glaciation is increasing ...
The U.S. Endangered Species Act
... effort to conserve biological diversity. The law has been successful in achieving its primary goal of preventing species extinctions. Very few of the more than nearly 2,000 species (including subspecies and vertebrate populations) protected by the ESA have been declared extinct. Based on the risk of ...
... effort to conserve biological diversity. The law has been successful in achieving its primary goal of preventing species extinctions. Very few of the more than nearly 2,000 species (including subspecies and vertebrate populations) protected by the ESA have been declared extinct. Based on the risk of ...
Ch7 Community Ecology PDF
... a. No. It's impractical to force international laws on individual fishermen that are simply trying to feed their families with the fishing techniques that they have. b. Yes. Sharks are an important part of marine ecosystems. They must be protected and, like all animals, they should be humanely treat ...
... a. No. It's impractical to force international laws on individual fishermen that are simply trying to feed their families with the fishing techniques that they have. b. Yes. Sharks are an important part of marine ecosystems. They must be protected and, like all animals, they should be humanely treat ...
Preston
... Algal niches appear to be defined by their nutrient requirements. Tilman found coexistence of freshwater diatoms depended upon ratio of silicate and phosphate. Found conditions allowing coexistence. Diatoms held different trophic niches. – Thus different diatoms would dominate different areas. ...
... Algal niches appear to be defined by their nutrient requirements. Tilman found coexistence of freshwater diatoms depended upon ratio of silicate and phosphate. Found conditions allowing coexistence. Diatoms held different trophic niches. – Thus different diatoms would dominate different areas. ...
Watsonia 1, 131-134
... part concludes with series of uniform maps six to a page, showing the kllown distribution of all the species. Keys for identification are given at the. beginnIng of each genus, and the t ext contains very many notes of systematic value under tJhe va,rious species . Full details of the records are gi ...
... part concludes with series of uniform maps six to a page, showing the kllown distribution of all the species. Keys for identification are given at the. beginnIng of each genus, and the t ext contains very many notes of systematic value under tJhe va,rious species . Full details of the records are gi ...
New records of Diopatra marocensis
... representative of the onuphid polychaete genus Diopatra Audouin and Milne-Edwards, 1833 as had been previously accepted: Diopatra marocensis Paxton et al., 1995, only known from its type locality, the Moroccan Atlantic coast, was reported by Rodrigues et al. (2009) as coexisting with D. neapolitana ...
... representative of the onuphid polychaete genus Diopatra Audouin and Milne-Edwards, 1833 as had been previously accepted: Diopatra marocensis Paxton et al., 1995, only known from its type locality, the Moroccan Atlantic coast, was reported by Rodrigues et al. (2009) as coexisting with D. neapolitana ...
community
... • In parasitism (+/– interaction), one organism, the parasite, derives nourishment from another organism, its host, which is harmed in the process. • Parasites that live within the body of their host are called endoparasites. • Parasites that live on the external surface of a host are ectoparasites. ...
... • In parasitism (+/– interaction), one organism, the parasite, derives nourishment from another organism, its host, which is harmed in the process. • Parasites that live within the body of their host are called endoparasites. • Parasites that live on the external surface of a host are ectoparasites. ...
Endemic Species of Grenada
... It is likely that you have never heard of Grenada's endemic Drosophila similus grenadensis, but perhaps you have heard of Grenada's most famous endemic species, the Grenada dove (Leptotila wellsi). There are several species of doves and pigeons on Grenada, but only one species is the critically enda ...
... It is likely that you have never heard of Grenada's endemic Drosophila similus grenadensis, but perhaps you have heard of Grenada's most famous endemic species, the Grenada dove (Leptotila wellsi). There are several species of doves and pigeons on Grenada, but only one species is the critically enda ...
A preliminary list of Chironomidae in Everglades National Park
... abundant macroinvertebrate group in freshwater ecosystems. They are a major component in the Everglades food web, linking plant, algal, and microbial production to higher trophic levels. Chironomid midges are abundant in a variety of substrates including periphyton mats, and along with the Ceratopog ...
... abundant macroinvertebrate group in freshwater ecosystems. They are a major component in the Everglades food web, linking plant, algal, and microbial production to higher trophic levels. Chironomid midges are abundant in a variety of substrates including periphyton mats, and along with the Ceratopog ...
press release
... These fish were brought to Hawai‘i from French Polynesia in the South Pacific and were introduced in several events between 1955 and 1961. Most of the introduced fish were released on the island of O‘ahu with a small number of the roi released on Hawai‘i Island. Within 15 years, all three species ha ...
... These fish were brought to Hawai‘i from French Polynesia in the South Pacific and were introduced in several events between 1955 and 1961. Most of the introduced fish were released on the island of O‘ahu with a small number of the roi released on Hawai‘i Island. Within 15 years, all three species ha ...
Fauna of Africa
Fauna of Africa, in its broader sense, is all the animals living in Africa and its surrounding seas and islands. The more characteristic African fauna is found in the Afrotropical ecoregion. Lying almost entirely within the tropics, and equally to north and south of the equator creates favourable conditions for rich wildlife.