Intertidal Zonation Does Species Diversity
... evenly represented in the lower zones. Increased competition for space, predation and disturbance by waves is thought to contribute to fewer individuals per species in the low zone. While the Shannon-Wiener Index and Dominance support the view that diversity increases toward the water's edge, Specie ...
... evenly represented in the lower zones. Increased competition for space, predation and disturbance by waves is thought to contribute to fewer individuals per species in the low zone. While the Shannon-Wiener Index and Dominance support the view that diversity increases toward the water's edge, Specie ...
Population Dynamics of Exotic Insects
... the bounds of reality. However, DeBach states his position clearly, and I do not quarrel with him. But the thing that concerns me is why these authors, and most others that discuss this concept, persist in talking of "identical niches" when they are clearly referring to a single environmental elemen ...
... the bounds of reality. However, DeBach states his position clearly, and I do not quarrel with him. But the thing that concerns me is why these authors, and most others that discuss this concept, persist in talking of "identical niches" when they are clearly referring to a single environmental elemen ...
Conservation of European farmland birds
... Across much of Europe, farmland birds have declined more than those in other habitats; many of the most threatened birds are dependent on extensive farming systems. This paper describes two case studies in which bird abundance was monitored in relation to spatial and temporal differences in agricult ...
... Across much of Europe, farmland birds have declined more than those in other habitats; many of the most threatened birds are dependent on extensive farming systems. This paper describes two case studies in which bird abundance was monitored in relation to spatial and temporal differences in agricult ...
Abstract and introduction, study sites, methods
... Prior to human settlement, the Hawaiian Islands had no terrestrial mammals except the endemic Hawaiian hoary bat (Lasiurus cinereus semotus) (Tomich 1986). Polynesian rats (Rattus exulans) were introduced with some of the first human populations that voyaged to the islands and have been present in l ...
... Prior to human settlement, the Hawaiian Islands had no terrestrial mammals except the endemic Hawaiian hoary bat (Lasiurus cinereus semotus) (Tomich 1986). Polynesian rats (Rattus exulans) were introduced with some of the first human populations that voyaged to the islands and have been present in l ...
Concepts of diversity - Chezshaw.demon.co.uk
... ecological diversity is. By the end of the lecture you will know more but probably feel more confused! This is because diversity is not a unitary concept but has several strands; different emphases give rise to different answers. (And as an analytical tool for actual practical decisions, I think tha ...
... ecological diversity is. By the end of the lecture you will know more but probably feel more confused! This is because diversity is not a unitary concept but has several strands; different emphases give rise to different answers. (And as an analytical tool for actual practical decisions, I think tha ...
Some of these slides have been borrowed from Dr. Paul Lewis, Dr
... • Helped the field move away from the essentialist, morphological, and nominalist species concepts; • Closely tied into evolutionary theory – very similar to population geneticist’s view of species (e.g. Sewall Wright’s); • Emphasizes one of the important the biological force that lead to cohesive l ...
... • Helped the field move away from the essentialist, morphological, and nominalist species concepts; • Closely tied into evolutionary theory – very similar to population geneticist’s view of species (e.g. Sewall Wright’s); • Emphasizes one of the important the biological force that lead to cohesive l ...
ROLE OF KEYSTONE SPECIES IN AQUATIC ECOSYSTEM
... Estes 1988). Thus, o tte r re m o va l has com m u nity-le vel influences, by releasing from predation a primary c o n s u m e r th a t eats a plant th a t harbors o th e r organisms. As used by Paine and o th e r ecologists, the re are two hallmarks o f keystone species. First, their presence is c ...
... Estes 1988). Thus, o tte r re m o va l has com m u nity-le vel influences, by releasing from predation a primary c o n s u m e r th a t eats a plant th a t harbors o th e r organisms. As used by Paine and o th e r ecologists, the re are two hallmarks o f keystone species. First, their presence is c ...
Monitors cross the Red Sea: The biogeographic
... While few phylogenetic or phylogeographic studies have been conducted on taxa with Afro-Arabian distributions, the results of these studies suggest that each of the five proposed biogeographic hypotheses are supported in at least one group or taxon (Table 1). There appear to be no consistent patterns ...
... While few phylogenetic or phylogeographic studies have been conducted on taxa with Afro-Arabian distributions, the results of these studies suggest that each of the five proposed biogeographic hypotheses are supported in at least one group or taxon (Table 1). There appear to be no consistent patterns ...
RATS (Rattus sp.) IN GUAFO ISLAND
... Invasive species are considered one of the most important causes of biodiversity loss on the planet. Rats (Rattus sp.) are within the taxonomic groups that successfully invade new ecosystems (Meerburg et al.2009). The impact of rodents in the loss of biodiversity has been particularly dramatic in oc ...
... Invasive species are considered one of the most important causes of biodiversity loss on the planet. Rats (Rattus sp.) are within the taxonomic groups that successfully invade new ecosystems (Meerburg et al.2009). The impact of rodents in the loss of biodiversity has been particularly dramatic in oc ...
Indo-Pacific Palms as a Model Group
... Botanical Gardens, Kew) and Professor Vincent Savolainen (Life Sciences) Department: Royal Botanical Gardens, Kew Tropical rainforests are the most diverse terrestrial ecosystems on earth, housing >50% of the world’s species in 7% of the total land surface area. Despite their importance to climate, ...
... Botanical Gardens, Kew) and Professor Vincent Savolainen (Life Sciences) Department: Royal Botanical Gardens, Kew Tropical rainforests are the most diverse terrestrial ecosystems on earth, housing >50% of the world’s species in 7% of the total land surface area. Despite their importance to climate, ...
9_maintenance of diversity
... D) Models of succession: (Connell and Slatyer 1977 American Naturalist) i) Facilitation: early species modify the environment… - make it more suitable for later species - later species can’t colonize until environment modified - modified environment sometimes not so good for early species ii) Inhibi ...
... D) Models of succession: (Connell and Slatyer 1977 American Naturalist) i) Facilitation: early species modify the environment… - make it more suitable for later species - later species can’t colonize until environment modified - modified environment sometimes not so good for early species ii) Inhibi ...
Location and situation
... Well respected, fully-protected marine reserves can lead to at least a doubling in the biomass of exploited fish species after three to five years protection. Furthermore, reserves create a mosaic of conditions, allowing different ecological communities to develop a healthier environment. They serve ...
... Well respected, fully-protected marine reserves can lead to at least a doubling in the biomass of exploited fish species after three to five years protection. Furthermore, reserves create a mosaic of conditions, allowing different ecological communities to develop a healthier environment. They serve ...
fique scienti Actualité Retreating glaciers
... the functioning of mountain ecosystems, particularly through decomposition of organic matter that enables soil to be formed. They can also be useful downstream, for the 2 million inhabitants of Quito, for example. For these organisms also function as bio-indicators for the quality of the water that ...
... the functioning of mountain ecosystems, particularly through decomposition of organic matter that enables soil to be formed. They can also be useful downstream, for the 2 million inhabitants of Quito, for example. For these organisms also function as bio-indicators for the quality of the water that ...
Chapter 6-3 HW Worksheet
... Species diversity is the number of different species in an area or in the biosphere. Genetic diversity is the total of all genetic information carried in living things. Biodiversity benefits humans through its contributions to medicine and agriculture and through the provision of ecological goods an ...
... Species diversity is the number of different species in an area or in the biosphere. Genetic diversity is the total of all genetic information carried in living things. Biodiversity benefits humans through its contributions to medicine and agriculture and through the provision of ecological goods an ...
File
... es:mated to be alive on the planet • We don’t have a name for 85% of the species on the planet! How much life is on the planet? ...
... es:mated to be alive on the planet • We don’t have a name for 85% of the species on the planet! How much life is on the planet? ...
Eccentric Endemics
... giant lemurs, pygmy hippopotami and huge birds, by the mid-19th century these were already extinct). In place of monkeys and apes, he would have seen lemurs – primates living in far more diverse ways than their mainland cousins. Instead of cats and dogs, there were predators such as the fosa – Madag ...
... giant lemurs, pygmy hippopotami and huge birds, by the mid-19th century these were already extinct). In place of monkeys and apes, he would have seen lemurs – primates living in far more diverse ways than their mainland cousins. Instead of cats and dogs, there were predators such as the fosa – Madag ...
Bucklin - Introduction - Census of Marine Zooplankton
... “What species are present? What are the main patterns of species distribution and abundance? What maintains the shape of these patterns? How and why did the patterns develop?” McGowan (1971) How many species are there? How many new species will be found? Will most new species be found in biodiversit ...
... “What species are present? What are the main patterns of species distribution and abundance? What maintains the shape of these patterns? How and why did the patterns develop?” McGowan (1971) How many species are there? How many new species will be found? Will most new species be found in biodiversit ...
Ecological Interactions Activity Student Handout Background
... limited resource. This reduces the fitness of one or both of the species. For example, hyenas chase away vultures that are trying to eat the remains of the same zebra. Mutualism is a type of interaction where both species benefit each other. For example, bees and flowers have a mutualistic relations ...
... limited resource. This reduces the fitness of one or both of the species. For example, hyenas chase away vultures that are trying to eat the remains of the same zebra. Mutualism is a type of interaction where both species benefit each other. For example, bees and flowers have a mutualistic relations ...
Island Biogeography
... shown to be fairly constant for most island situations. z represents a parameter for the slope of the relationship between S and A on a log scale. ...
... shown to be fairly constant for most island situations. z represents a parameter for the slope of the relationship between S and A on a log scale. ...
Discoveries of new mammal species and their implications for
... mitochondrial DNA barcoding) including many lineages specialized to attack different hosts (5, 6). These findings are of much more than academic interest. Most of the focus in conservation has been on trying to preserve as much of species diversity as possible (7, 8). Although the equally critical n ...
... mitochondrial DNA barcoding) including many lineages specialized to attack different hosts (5, 6). These findings are of much more than academic interest. Most of the focus in conservation has been on trying to preserve as much of species diversity as possible (7, 8). Although the equally critical n ...
Biodiversity Effects on Soil Processes Explained by Interspecific
... soil processes. We hypothesized that species mixtures that contain species with different effects on ecosystem processes (species that are functionally dissimilar as to these processes) show facilitative interactions, irrespectively of the number of species or taxonomic groups involved. Functional d ...
... soil processes. We hypothesized that species mixtures that contain species with different effects on ecosystem processes (species that are functionally dissimilar as to these processes) show facilitative interactions, irrespectively of the number of species or taxonomic groups involved. Functional d ...
Management of Savannas and Mammalian Populations
... Francesco M. Angelici, PhD in Evolutionary Biology, is a mammalogist based at the Italian Foundation of Vertebrate Zoology and at the Institute Demetra, where he supervises projects concerning the ecology and management of lagomorphs, carnivores, ungulates, and rodents, in both Italy and Africa. He ...
... Francesco M. Angelici, PhD in Evolutionary Biology, is a mammalogist based at the Italian Foundation of Vertebrate Zoology and at the Institute Demetra, where he supervises projects concerning the ecology and management of lagomorphs, carnivores, ungulates, and rodents, in both Italy and Africa. He ...
Other measures of communities and ecosystems?
... • A strategy is how a species sustains a population. Or what they do and how they live. – Not conscious choice, but pattern of life history and allocation that has been moulded by natural selection ...
... • A strategy is how a species sustains a population. Or what they do and how they live. – Not conscious choice, but pattern of life history and allocation that has been moulded by natural selection ...
Tropical Bird Communities
... Nonseasonal environments, on the other hand, allow for greater specialization in resources available year-round, such as fruits and nectar, and also provide further opportunities for specialization in resources that simply are not available in temperate zones, such as epiphyte probing and army ant-r ...
... Nonseasonal environments, on the other hand, allow for greater specialization in resources available year-round, such as fruits and nectar, and also provide further opportunities for specialization in resources that simply are not available in temperate zones, such as epiphyte probing and army ant-r ...
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.