Nordic Society Oikos
... Roberts 1990, 1992). Other issues, such as guild designation, source-pool construction, and habitat affinities are perhaps more important to the outcome of the analysis, but these factors have rarely been investigated systematically (Gotelli and Graves 1996). Because Diamond (1975) never published t ...
... Roberts 1990, 1992). Other issues, such as guild designation, source-pool construction, and habitat affinities are perhaps more important to the outcome of the analysis, but these factors have rarely been investigated systematically (Gotelli and Graves 1996). Because Diamond (1975) never published t ...
Alligator Rivers coastal floodplains
... Chatto (2006; R. Chatto, NRETAS unpubl.) notes 214 important waterbird records for this site, including the significant counts of species identified above and others that are regionally important. Breeding records: Morton et al. (1989) notes that few waterbird species breed in large numbers in the A ...
... Chatto (2006; R. Chatto, NRETAS unpubl.) notes 214 important waterbird records for this site, including the significant counts of species identified above and others that are regionally important. Breeding records: Morton et al. (1989) notes that few waterbird species breed in large numbers in the A ...
Grassland Birds: An Overview of Threats and Recommended Management Strategies
... major, sometimes profound, losses of habitat from agriculture, range management, and urban development. In addition, habitat fragmentation and degradation have been severe. Habitat loss is most frequently viewed when grassland is converted to cropland or other uses, but loss of habitat also includes ...
... major, sometimes profound, losses of habitat from agriculture, range management, and urban development. In addition, habitat fragmentation and degradation have been severe. Habitat loss is most frequently viewed when grassland is converted to cropland or other uses, but loss of habitat also includes ...
RESOURCE RESILIENCE, HUMAN NICHE CONSTRUCTION, AND
... the ‘‘low impact’’ profile of these small-scale indigenous societies and to view their limited predation pressure and limited potential for environmental damage from a different perspective. On the one hand, rather than characterizing human impact on wild animal populations simply in terms of low pr ...
... the ‘‘low impact’’ profile of these small-scale indigenous societies and to view their limited predation pressure and limited potential for environmental damage from a different perspective. On the one hand, rather than characterizing human impact on wild animal populations simply in terms of low pr ...
Biodiversity_ Species Interactions_ and Population Control
... • No population can grow indefinitely because of limitations on resources and because of competition among species for those resources… • Range of tolerance – Variations in physical and chemical environment – Individuals may have different tolerance ranges ...
... • No population can grow indefinitely because of limitations on resources and because of competition among species for those resources… • Range of tolerance – Variations in physical and chemical environment – Individuals may have different tolerance ranges ...
Two Asian fresh water shrimp species found in a
... apressed dorsal teeth on rostrum, compared to females), and the distinct sexual dimorphism at the third pereopods. The taxonomy of Neocaridina davidi remains partially conflicting and unclear. In his revision of the genus Neocaridina, Cai (1996) transferred C. davidi to the genus Neocaridina, and co ...
... apressed dorsal teeth on rostrum, compared to females), and the distinct sexual dimorphism at the third pereopods. The taxonomy of Neocaridina davidi remains partially conflicting and unclear. In his revision of the genus Neocaridina, Cai (1996) transferred C. davidi to the genus Neocaridina, and co ...
Dominica Schools Booklet 2016
... competing for the same habitats and thermal environments. Reptiles, especially small lizards like anoles, require quite specific thermal niches (temperature ranges) in order to maintain their preferred body temperature. If two species are in competition for areas of habitat with the same thermal pro ...
... competing for the same habitats and thermal environments. Reptiles, especially small lizards like anoles, require quite specific thermal niches (temperature ranges) in order to maintain their preferred body temperature. If two species are in competition for areas of habitat with the same thermal pro ...
Amphibian Monitoring
... Declines in amphibian populations may be due in part to natural fluctuations, but they more likely suggest that humans are changing the environment more rapidly than amphibians can adapt. One such change is the destruction and modification of amphibian habitats, such as the cutting down of forests a ...
... Declines in amphibian populations may be due in part to natural fluctuations, but they more likely suggest that humans are changing the environment more rapidly than amphibians can adapt. One such change is the destruction and modification of amphibian habitats, such as the cutting down of forests a ...
Interactive effects of habitat modification and species invasion on
... strongly defined lines of invader traits [10] versus invasibility of the recipient ecosystem [11,12]. However, the emerging realization is that these two components of invasion success are not independent [8,13]. Instead, the answers to the most important ‘invasion’ questions depend on the degree of ...
... strongly defined lines of invader traits [10] versus invasibility of the recipient ecosystem [11,12]. However, the emerging realization is that these two components of invasion success are not independent [8,13]. Instead, the answers to the most important ‘invasion’ questions depend on the degree of ...
Biological and ecological traits of marine species
... The prioritization of traits for marine species involved a review of the use of traits in literature and related databases, and asking experts in a range of taxa (including crustaceans, molluscs, fish, echinoderms, algae, birds, nematodes, annelids), and benthic and pelagic ecology of coastal and de ...
... The prioritization of traits for marine species involved a review of the use of traits in literature and related databases, and asking experts in a range of taxa (including crustaceans, molluscs, fish, echinoderms, algae, birds, nematodes, annelids), and benthic and pelagic ecology of coastal and de ...
Oceanic pelagic prey of benthopelagic fish in the benthic boundary
... in the west Florida region of the Gulf of Mexico, nor did Pearcy (1964) in the case of mesopelagic fish off the Oregon shelf. They suggested that even if these species migrated into the epipelagic and penetrated the onshelf waters, t h e ~ rsurvival there, through either predation or the lack of a v ...
... in the west Florida region of the Gulf of Mexico, nor did Pearcy (1964) in the case of mesopelagic fish off the Oregon shelf. They suggested that even if these species migrated into the epipelagic and penetrated the onshelf waters, t h e ~ rsurvival there, through either predation or the lack of a v ...
Functional and phylogenetic diversity of woody plants drive
... that not only the traits of a focal plant species, but also community properties, play an important role in determining herbivore damage levels (Loranger et al., 2013). Accounting for the functional and phylogenetic diversity of plant communities may thus be key to explaining the variation in herbiv ...
... that not only the traits of a focal plant species, but also community properties, play an important role in determining herbivore damage levels (Loranger et al., 2013). Accounting for the functional and phylogenetic diversity of plant communities may thus be key to explaining the variation in herbiv ...
Chapter 52 1. What are the different levels of ecological research? 2
... 6. What are the major take‐home lessons from the research done at Hubbard Brook? ...
... 6. What are the major take‐home lessons from the research done at Hubbard Brook? ...
Parasite host-switching from the invasive American red
... The red-eared slider turtle, Trachemys scripta elegans, is among the most over-exploited animals and is still exported annually from the USA all over the world. Once introduced into its new environment, feral populations may arise and pose threats to local biodiversity and ecosystem functioning. In ...
... The red-eared slider turtle, Trachemys scripta elegans, is among the most over-exploited animals and is still exported annually from the USA all over the world. Once introduced into its new environment, feral populations may arise and pose threats to local biodiversity and ecosystem functioning. In ...
Species extinctions in food webs – local and regional processes Anna Eklöf
... Loss of biodiversity is one of the most severe threats to the ecosystems of the world. The major causes behind the high population and species extinction rates are anthropogenic activities such as overharvesting of natural populations, pollution, climate change and destruction and fragmentation of n ...
... Loss of biodiversity is one of the most severe threats to the ecosystems of the world. The major causes behind the high population and species extinction rates are anthropogenic activities such as overharvesting of natural populations, pollution, climate change and destruction and fragmentation of n ...
DR on Adoption of Guidance and Definitions Rev1
... In the context of the implementation of AEWA’s Action Plan, the following widely accepted definition drawn from Fox & Madsen (1997) should be used: “Any human-induced activity that constitutes a stimulus (equivalent to a predation threat) sufficient to disrupt normal activities and/or distribution o ...
... In the context of the implementation of AEWA’s Action Plan, the following widely accepted definition drawn from Fox & Madsen (1997) should be used: “Any human-induced activity that constitutes a stimulus (equivalent to a predation threat) sufficient to disrupt normal activities and/or distribution o ...
Studying insect diversity in the tropics
... Wagner 1997); in Asia (e.g. Morse et al. 1988; Stork 1988, 1991; Hammond et al. 1997); and in Australia (e.g. Basset & Kitching 1991). The studies show an inordinate fondness for beetles, although other groups have also been examined and a few studies have surveyed the full spectrum of insects (e.g. ...
... Wagner 1997); in Asia (e.g. Morse et al. 1988; Stork 1988, 1991; Hammond et al. 1997); and in Australia (e.g. Basset & Kitching 1991). The studies show an inordinate fondness for beetles, although other groups have also been examined and a few studies have surveyed the full spectrum of insects (e.g. ...
Appendix A: Freshwater Mussels
... Because eastern pearlshell is a long‐lived species (over 100 years), it is difficult to detect trends in populations without an established long‐term monitoring program, which does not currently exist (Nedeau et al 2000). In other northeast states, there has been little evidence of reproductive succ ...
... Because eastern pearlshell is a long‐lived species (over 100 years), it is difficult to detect trends in populations without an established long‐term monitoring program, which does not currently exist (Nedeau et al 2000). In other northeast states, there has been little evidence of reproductive succ ...
native plants and adapted seeds for reclamation
... distribution. For example, Wyoming’s state grass, western wheatgrass (Pascopyrum smithii), occurs from Canada to New Mexico over an elevational range from 1,000 to 9,000 feet (Tirmenstein 1999). Populations within a species grow in a variety of climate conditions and are in contact with diverse soil ...
... distribution. For example, Wyoming’s state grass, western wheatgrass (Pascopyrum smithii), occurs from Canada to New Mexico over an elevational range from 1,000 to 9,000 feet (Tirmenstein 1999). Populations within a species grow in a variety of climate conditions and are in contact with diverse soil ...
Learning objectives
... 18. Describe the problems associated with estimating Earth's carrying capacity for the human species. 19. Define the demographic transition. 20. Explain how an ecological footprint can be calculated for an individual or country. Describe the possible currencies of this calculation. CHAPTER 54 COMMUN ...
... 18. Describe the problems associated with estimating Earth's carrying capacity for the human species. 19. Define the demographic transition. 20. Explain how an ecological footprint can be calculated for an individual or country. Describe the possible currencies of this calculation. CHAPTER 54 COMMUN ...
Online Resource Title: Supporting conservation with biodiversity
... reserve; snakes and lizards twice as abundant in communal grazing; locations generally housed 2/3's of total diversity many herbivores can thrive when sharing with moderate livestock densities, but only few when livestock densities are high greater density of birds and unique species assemblages on ...
... reserve; snakes and lizards twice as abundant in communal grazing; locations generally housed 2/3's of total diversity many herbivores can thrive when sharing with moderate livestock densities, but only few when livestock densities are high greater density of birds and unique species assemblages on ...
Landscapes and Their Ecological Components
... woods and grassland. Where plants are concerned, “perception” is taken to mean the ability to absorb information from the surrounding environment. This is directly related to the extent of adaptation, to the rate of colonization and extinction, and to the resistance to natural and man-made stresses. ...
... woods and grassland. Where plants are concerned, “perception” is taken to mean the ability to absorb information from the surrounding environment. This is directly related to the extent of adaptation, to the rate of colonization and extinction, and to the resistance to natural and man-made stresses. ...
Vulnerable Marine Ecosystems Dominated by Deep
... At its 2006 Annual Meeting, NAFO adopted precautionary closures of four seamount areas based on the ecosystem approach to fisheries which included strict conditions under which exploratory fisheries could occur within these seamount areas. Subsequently an area in NAFO Division 3O was closed to prote ...
... At its 2006 Annual Meeting, NAFO adopted precautionary closures of four seamount areas based on the ecosystem approach to fisheries which included strict conditions under which exploratory fisheries could occur within these seamount areas. Subsequently an area in NAFO Division 3O was closed to prote ...
GNLCC High level Priorities 2016 DRAFT
... A landscape-wide, dynamic mapping tools describing relative ecological function of watersheds Overlay with other conservation strategies and targets to identify areas where aquatic integrity on multiple levels can be addressed by partners (web-based models that support 'place-based’ use and plan ...
... A landscape-wide, dynamic mapping tools describing relative ecological function of watersheds Overlay with other conservation strategies and targets to identify areas where aquatic integrity on multiple levels can be addressed by partners (web-based models that support 'place-based’ use and plan ...
Conservation status of Powerful Owl in New South Wales
... vulpes’, and ‘High frequency fire resulting in the disruption of life cycle processes in plants and animals and loss of vegetation structure and composition’ are listed as Key Threatening Processes under the TSC Act in NSW. Extreme fluctuations: There is no evidence of extreme fluctuations in popula ...
... vulpes’, and ‘High frequency fire resulting in the disruption of life cycle processes in plants and animals and loss of vegetation structure and composition’ are listed as Key Threatening Processes under the TSC Act in NSW. Extreme fluctuations: There is no evidence of extreme fluctuations in popula ...
Biodiversity action plan
This article is about a conservation biology topic. For other uses of BAP, see BAP (disambiguation).A biodiversity action plan (BAP) is an internationally recognized program addressing threatened species and habitats and is designed to protect and restore biological systems. The original impetus for these plans derives from the 1992 Convention on Biological Diversity (CBD). As of 2009, 191 countries have ratified the CBD, but only a fraction of these have developed substantive BAP documents.The principal elements of a BAP typically include: (a) preparing inventories of biological information for selected species or habitats; (b) assessing the conservation status of species within specified ecosystems; (c) creation of targets for conservation and restoration; and (d) establishing budgets, timelines and institutional partnerships for implementing the BAP.