A generic approach to integrate biodiversity considerations in
... Projects can also carry out social2 interventions that lead to social change processes being defined as changes in the characteristics of social components (individuals, families, functional groups, or a society as a whole); the nature of these characteristics can be demographic, economic, socio-cul ...
... Projects can also carry out social2 interventions that lead to social change processes being defined as changes in the characteristics of social components (individuals, families, functional groups, or a society as a whole); the nature of these characteristics can be demographic, economic, socio-cul ...
An ecological perspective on the deployment and design of low
... serious threats along many coastlines, and will become more serious as a consequence of human-induced changes and accelerated sea-level rise. Over the past century, hard coastal defence structures have become ubiquitous features of coastal landscapes as a response to these threats. The proliferation ...
... serious threats along many coastlines, and will become more serious as a consequence of human-induced changes and accelerated sea-level rise. Over the past century, hard coastal defence structures have become ubiquitous features of coastal landscapes as a response to these threats. The proliferation ...
Population spatial structure, human
... (Andren 1994, Fahrig unpublished data). In general the less habitat and/or the lower the quality of habitat within an area, the smaller the local populations will be and this will lower the probability of local population survival. Small local population sizes have the additional effect of reducing ...
... (Andren 1994, Fahrig unpublished data). In general the less habitat and/or the lower the quality of habitat within an area, the smaller the local populations will be and this will lower the probability of local population survival. Small local population sizes have the additional effect of reducing ...
Multiple prey traits, multiple predators: keys to understanding
... Stein, 1977; Keller and Moore, 1999, 2000), illustrating a compensatory relationship between size and behaviour. In theory, even complex traits such as phenotypic plasticity and bet-hedging can be used in an integrated manner (DeWitt and Langerhans, in press). In this paper we review concepts and is ...
... Stein, 1977; Keller and Moore, 1999, 2000), illustrating a compensatory relationship between size and behaviour. In theory, even complex traits such as phenotypic plasticity and bet-hedging can be used in an integrated manner (DeWitt and Langerhans, in press). In this paper we review concepts and is ...
Interaction strengths in food webs - Centre for Biodiversity Theory
... of interaction strength. A critical problem with using a common word for these different aspects of link weighting is that it may generate unnecessarily false or misleading predictions about the effects of strong or weak interactions in a community. For example, strong consumption intensity by a pre ...
... of interaction strength. A critical problem with using a common word for these different aspects of link weighting is that it may generate unnecessarily false or misleading predictions about the effects of strong or weak interactions in a community. For example, strong consumption intensity by a pre ...
Interaction strengths in food webs
... of interaction strength. A critical problem with using a common word for these different aspects of link weighting is that it may generate unnecessarily false or misleading predictions about the effects of strong or weak interactions in a community. For example, strong consumption intensity by a pre ...
... of interaction strength. A critical problem with using a common word for these different aspects of link weighting is that it may generate unnecessarily false or misleading predictions about the effects of strong or weak interactions in a community. For example, strong consumption intensity by a pre ...
Using the focal species approach for conserving biodiversity in
... 1992). Murphy et al. (1990) criticized the use of vertebrates as indicators because they are long-lived, have low rates of population increase, long generation times, and low habitat specificity when compared with invertebrates and hence are unlikely to represent population changes in this group. A ...
... 1992). Murphy et al. (1990) criticized the use of vertebrates as indicators because they are long-lived, have low rates of population increase, long generation times, and low habitat specificity when compared with invertebrates and hence are unlikely to represent population changes in this group. A ...
Gamebird hunting and biodiversity conservation: synthesis
... The number of hunters in the REGHAB countries has been stable or has decreased slightly in the last 20 years. Hunting is still mainly a male activity, and the mean age of hunters is relatively high; in fact, for the countries for which enough information exists, the hunter population appears to be a ...
... The number of hunters in the REGHAB countries has been stable or has decreased slightly in the last 20 years. Hunting is still mainly a male activity, and the mean age of hunters is relatively high; in fact, for the countries for which enough information exists, the hunter population appears to be a ...
Biodiversity and Ecosystem Functioning Further
... Huston (1997) suggested that biodiversity was not the actual cause of greater stability in high-diversity plots following drought (Tilman 1996, Tilman & Downing 1994), nor of greater productivity in the foodweb experiment (Naeem et al. 1994, 1995), nor of greater productivity and greater use of soil ...
... Huston (1997) suggested that biodiversity was not the actual cause of greater stability in high-diversity plots following drought (Tilman 1996, Tilman & Downing 1994), nor of greater productivity in the foodweb experiment (Naeem et al. 1994, 1995), nor of greater productivity and greater use of soil ...
Species factsheet - cod
... Also the distribution of adult cod does not seem to change much throughout the year (Fig. 6), although they seem to leave the warmer water of the Southern Bight during summer. The higher catches in quarter 1 may be caused by a higher catchability at this time of year, owing to changes in the behavio ...
... Also the distribution of adult cod does not seem to change much throughout the year (Fig. 6), although they seem to leave the warmer water of the Southern Bight during summer. The higher catches in quarter 1 may be caused by a higher catchability at this time of year, owing to changes in the behavio ...
Alternative Stable States Generated by Ontogenetic Niche
... that have different trophic effects on food webs. Therefore, when an animal uses different habitats at different stages, ontogenetic niche shifts have spatially spreading demographic impacts (e.g., [3-6]). In the field of spatial ecology, different theories have recently been developed from a variet ...
... that have different trophic effects on food webs. Therefore, when an animal uses different habitats at different stages, ontogenetic niche shifts have spatially spreading demographic impacts (e.g., [3-6]). In the field of spatial ecology, different theories have recently been developed from a variet ...
Back to the future: using palaeolimnology to infer long
... vertical compression in d15N range (NR) and subsequent increased overlap in isotopic niche space, indicating increased trophic redundancy within Felbrigg. This structural change, which was associated with a greater channelling of energy through a smaller number of nodes as alternative feeding pathwa ...
... vertical compression in d15N range (NR) and subsequent increased overlap in isotopic niche space, indicating increased trophic redundancy within Felbrigg. This structural change, which was associated with a greater channelling of energy through a smaller number of nodes as alternative feeding pathwa ...
Seasonal variations in species composition, abundance, biomass
... most abundant genus in terms of number of species (20), followed by Codonellopsis (4), Stenosemella (4), Favella (3), Eutintinnus (3), and the remaining genus, number of species are one or two. Most of the tintinnid species occurred on distinct seasonal pattern and closely associated to species-spec ...
... most abundant genus in terms of number of species (20), followed by Codonellopsis (4), Stenosemella (4), Favella (3), Eutintinnus (3), and the remaining genus, number of species are one or two. Most of the tintinnid species occurred on distinct seasonal pattern and closely associated to species-spec ...
Honors Biology – Chapters 3-5
... Explain the three main ecological methods of research (observing, experimenting, modeling) Explain the benefits and limitations of ecosystem observing, experimenting, and modeling Given ecosystem data, calculate the population density of an organism ...
... Explain the three main ecological methods of research (observing, experimenting, modeling) Explain the benefits and limitations of ecosystem observing, experimenting, and modeling Given ecosystem data, calculate the population density of an organism ...
biod10
... have done rather well for itself over the last billion years. The answer is simple; we want to use the ecosystem’s resources and still have them available to us in the future. Indeed, we have vastly increased the land’s natural carrying capacity through our management, but at what cost? The basic pr ...
... have done rather well for itself over the last billion years. The answer is simple; we want to use the ecosystem’s resources and still have them available to us in the future. Indeed, we have vastly increased the land’s natural carrying capacity through our management, but at what cost? The basic pr ...
English version
... Biodiversity is critical to the national economy contributing more than three quarters of the national GDP and sustaining livelihoods of majority of Tanzanians. Agriculture, livestock, forestry, and fisheries together contribute over 65% of GDP and account for over 80% of total employment and over 6 ...
... Biodiversity is critical to the national economy contributing more than three quarters of the national GDP and sustaining livelihoods of majority of Tanzanians. Agriculture, livestock, forestry, and fisheries together contribute over 65% of GDP and account for over 80% of total employment and over 6 ...
impacts of invasive stream salmonids on native fish: using meta
... We further examined whether the magnitude of the alien impact depended on the study type. For this purpose, we divided the studies based on whether they were conducted in (i) laboratory channels, (ii) fish enclosures in natural streams or semi-natural outdoor channels, or (iii) natural streams (both ...
... We further examined whether the magnitude of the alien impact depended on the study type. For this purpose, we divided the studies based on whether they were conducted in (i) laboratory channels, (ii) fish enclosures in natural streams or semi-natural outdoor channels, or (iii) natural streams (both ...
Processes affecting diversity
... Species diversity is affected by both equilibrium and non-equilibrium processes. ...
... Species diversity is affected by both equilibrium and non-equilibrium processes. ...
Stachowicz Annual Reviews - Virginia Institute of Marine Science
... into these questions. Stimulated in part by these transformations, theoretical and empirical research in ecology has turned to the relationship between biodiversity and ecosystem functioning. Ecosystem functioning, as we consider it, includes aggregate, community or ecosystem-level processes and pro ...
... into these questions. Stimulated in part by these transformations, theoretical and empirical research in ecology has turned to the relationship between biodiversity and ecosystem functioning. Ecosystem functioning, as we consider it, includes aggregate, community or ecosystem-level processes and pro ...
Pages 304-308 - Lakeland Regional High School
... dramatic and well known • The damage to wildlife and ecosystems caused by pollution can be severe - But it tends to be less than the damage caused by habitat alteration or invasive species Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... dramatic and well known • The damage to wildlife and ecosystems caused by pollution can be severe - But it tends to be less than the damage caused by habitat alteration or invasive species Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Remembering the Gulf: Changes to the marine communities on the
... development throughout, including hotels, marina, gas station, and paved roads. ...
... development throughout, including hotels, marina, gas station, and paved roads. ...
Télécharger
... where small gains accumulate over generations; gene transfer may be considered long-term where the gains may be substantial, but may not accumulate each generation. Many of these technologies can and should be combined and used together. Recently, there has been a callfor the application of genetic ...
... where small gains accumulate over generations; gene transfer may be considered long-term where the gains may be substantial, but may not accumulate each generation. Many of these technologies can and should be combined and used together. Recently, there has been a callfor the application of genetic ...
Publications_files/EEEP Preservation
... Although philosopher-scientists such as Leopold and Victor Shelford (1877-1968) had urged the preservation of representative ecosystems, their concerns were not translated into public preservation policy, which was motivated by the aesthetic appreciation of monumental scenery (as served by the natio ...
... Although philosopher-scientists such as Leopold and Victor Shelford (1877-1968) had urged the preservation of representative ecosystems, their concerns were not translated into public preservation policy, which was motivated by the aesthetic appreciation of monumental scenery (as served by the natio ...
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Sustained overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at a rate that is unsustainable, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined somewhat differently in fisheries, hydrology and natural resource management.Overexploitation can lead to resource destruction, including extinctions. However it is also possible for overexploitation to be sustainable, as discussed below in the section on fisheries. In the context of fishing, the term overfishing can be used instead of overexploitation, as can overgrazing in stock management, overlogging in forest management, overdrafting in aquifer management, and endangered species in species monitoring. Overexploitation is not an activity limited to humans. Introduced predators and herbivores, for example, can overexploit native flora and fauna.