Species interaction mechanisms maintain grassland
... between two species. Since that time, these ideas have been further developed by others (e.g., Chesson 2000, Kokkoris et al. 2002, Loreau 2004). For example, Chesson’s (2000) stabilizing mechanisms are those that maintain diversity by increasing negative intraspecific interactions relative to negativ ...
... between two species. Since that time, these ideas have been further developed by others (e.g., Chesson 2000, Kokkoris et al. 2002, Loreau 2004). For example, Chesson’s (2000) stabilizing mechanisms are those that maintain diversity by increasing negative intraspecific interactions relative to negativ ...
Summary - Yellowstone to Yukon Conservation Initiative
... the habitat requirements of wildlife species can be affected by many types of resource development or other activity. The spatial pattern of impacts is the key to cumulative effects assessment, since most species are affected by habitat connectivity and fragmentation at different scales. ...
... the habitat requirements of wildlife species can be affected by many types of resource development or other activity. The spatial pattern of impacts is the key to cumulative effects assessment, since most species are affected by habitat connectivity and fragmentation at different scales. ...
Final Report - The Darwin Initiative
... Results from captive trials showed, that this method should not be used in Galápagos for birds if not as an emergency. Identified problems were disease risk, skill transfer (high turnover rate in personal) and technical problems due to the environmental conditions. The Project has so far not overcom ...
... Results from captive trials showed, that this method should not be used in Galápagos for birds if not as an emergency. Identified problems were disease risk, skill transfer (high turnover rate in personal) and technical problems due to the environmental conditions. The Project has so far not overcom ...
Analyzing Predator-Prey Models Using Systems of
... This predation relationship, between Canadian Lynx and Snowshoe Hare, has been selected for a reason. This is a very special predation relationship, very unique from most predation relationships throughout the world. This relationship was selected to study because the Canadian Lynx relies almost sol ...
... This predation relationship, between Canadian Lynx and Snowshoe Hare, has been selected for a reason. This is a very special predation relationship, very unique from most predation relationships throughout the world. This relationship was selected to study because the Canadian Lynx relies almost sol ...
climate change and connectivity: are corridors the solution?
... A great deal of attention and effort has been placed on implementing this principal into conservation programs at local, regional and continental scales by way of conservation corridors. Habitat fragmentation can disrupt natural population dynamics by reducing species dispersal and even causing loca ...
... A great deal of attention and effort has been placed on implementing this principal into conservation programs at local, regional and continental scales by way of conservation corridors. Habitat fragmentation can disrupt natural population dynamics by reducing species dispersal and even causing loca ...
Potential value of indicator species for conservation
... The value of the worlds biological resources has been estimated at about 33 trillion dollars, or twice the worlds total annual GNP (Costanza et al. 1997). However the true value is infinite, as human society cannot exist without them. All these resources are now managed in the sense that all ecos ...
... The value of the worlds biological resources has been estimated at about 33 trillion dollars, or twice the worlds total annual GNP (Costanza et al. 1997). However the true value is infinite, as human society cannot exist without them. All these resources are now managed in the sense that all ecos ...
Consumers Control Diversity and Functioning of a Natural Marine
... seaweed assemblages. Littorina grazing has long been recognized as a driver of intertidal algal diversity [19], and recent experiments have demonstrated the general importance of algal species richness and identity in mediating primary productivity [24,25]. We removed existing algal biomass from tid ...
... seaweed assemblages. Littorina grazing has long been recognized as a driver of intertidal algal diversity [19], and recent experiments have demonstrated the general importance of algal species richness and identity in mediating primary productivity [24,25]. We removed existing algal biomass from tid ...
Colony–colony interactions between highly invasive ants
... On-going globalization and tourism facilitate species movements across the world and the rates of new species introductions are exploding (Essl et al., 2011). As a result, biological invasions are increasingly threatening biodiversity. Among invasive species, ants (Formicidae) are a particularly pro ...
... On-going globalization and tourism facilitate species movements across the world and the rates of new species introductions are exploding (Essl et al., 2011). As a result, biological invasions are increasingly threatening biodiversity. Among invasive species, ants (Formicidae) are a particularly pro ...
No Slide Title
... » Drop in NPP » Increased loss of nutrients » Decline in indicator species » Increased populations of pest species » Decline in species diversity » Presence of toxic chemicals ...
... » Drop in NPP » Increased loss of nutrients » Decline in indicator species » Increased populations of pest species » Decline in species diversity » Presence of toxic chemicals ...
AND SPECIES RICHNESS
... new functionalgroupsare added,but less rapidlywhen new species areredundant of existing functional groups. Lawton (102) proposed a model in which species may have strong,idiosyncraticeffects on ecosystems. If this is the case, thereis no predictableeffect of species richnessper se on ecosystem funct ...
... new functionalgroupsare added,but less rapidlywhen new species areredundant of existing functional groups. Lawton (102) proposed a model in which species may have strong,idiosyncraticeffects on ecosystems. If this is the case, thereis no predictableeffect of species richnessper se on ecosystem funct ...
Adaptive Radiation - Princeton University Press
... species can occupy the same ecological niche is, in modern language, no two species can occupy the same adaptive peak, for reasons of competitive inequality. Therefore, if all peaks in a landscape are occupied, there is no ecological opportunity for a radiation to occur, or if one has begun, there i ...
... species can occupy the same ecological niche is, in modern language, no two species can occupy the same adaptive peak, for reasons of competitive inequality. Therefore, if all peaks in a landscape are occupied, there is no ecological opportunity for a radiation to occur, or if one has begun, there i ...
What Limits Your Species
... Carrying capacity refers to the size of a population that can live indefinitely in an environment without doing that environment any harm. This applies to plants, animals or people. If the carrying capacity of the environment is exceeded, organisms die and the environment may be permanently destro ...
... Carrying capacity refers to the size of a population that can live indefinitely in an environment without doing that environment any harm. This applies to plants, animals or people. If the carrying capacity of the environment is exceeded, organisms die and the environment may be permanently destro ...
Avian Diversity and Feeding Guilds in a Secondary Forest, an Oil
... Sodhi 2004). Birds were selected for this study because they are best suited for studies of the patterns of change in feeding guilds. They are tolerant of habitat change, and they show a wide range of feeding guilds (Johns 1991). To date, studies of avian feeding guilds in different habitats resulti ...
... Sodhi 2004). Birds were selected for this study because they are best suited for studies of the patterns of change in feeding guilds. They are tolerant of habitat change, and they show a wide range of feeding guilds (Johns 1991). To date, studies of avian feeding guilds in different habitats resulti ...
INDECO: Results of the investigation of modelling methods and
... The INDECO work packages prior to WP5 identified indicator criteria and the indices that are available. The main objective of this package is to describe methods for modelling potentially useful generic indicators and how these indicators may be incorporated within a management framework to monitor ...
... The INDECO work packages prior to WP5 identified indicator criteria and the indices that are available. The main objective of this package is to describe methods for modelling potentially useful generic indicators and how these indicators may be incorporated within a management framework to monitor ...
full text
... relative species abundances from this transition matrix within the 12 fragments. We compared ...
... relative species abundances from this transition matrix within the 12 fragments. We compared ...
Ecological Restoration - UW Courses Web Server
... • Smaller, isolated patches of restored ecosystems are much less stable and require more maintenance (more prone to invasion by non-native species and loss of natives). ...
... • Smaller, isolated patches of restored ecosystems are much less stable and require more maintenance (more prone to invasion by non-native species and loss of natives). ...
Invasive species
... parts of their range that are unoccupied by the introduced enemies. Although in certain instances the last remaining individual of an island or lake species may meet its demise at the hands (or jaws) of the introduced enemy, it is likely that the last individuals probably die for other reason(s). In ...
... parts of their range that are unoccupied by the introduced enemies. Although in certain instances the last remaining individual of an island or lake species may meet its demise at the hands (or jaws) of the introduced enemy, it is likely that the last individuals probably die for other reason(s). In ...
Biodiversity and ecosystem services: does species diversity
... The attitude towards nature in society is changing. From areas that need to be protected from human activities to a position of nature in the centre of society, where ecosystems provide services for society representing the utility factor of nature: our natural capital. Examples of this changing pos ...
... The attitude towards nature in society is changing. From areas that need to be protected from human activities to a position of nature in the centre of society, where ecosystems provide services for society representing the utility factor of nature: our natural capital. Examples of this changing pos ...
ch11_Lecture_3e - Lakeland Central School District
... Conservation scientists work at multiple levels • Conservation biologists integrate evolution and extinction with ecology and environmental systems - Design, test, and implement ways to mitigate human impacts • Conservation geneticists = study genetic attributes of organisms to infer the status of ...
... Conservation scientists work at multiple levels • Conservation biologists integrate evolution and extinction with ecology and environmental systems - Design, test, and implement ways to mitigate human impacts • Conservation geneticists = study genetic attributes of organisms to infer the status of ...
Plant species provide vital ecosystem functions for sustainable
... specific cover crops to provide ecosystem services, the selection of plant species can be invaluable in ranching, range management and restoration. Practices such as the intensity and timing of grazing, fertilization and subclover planting can alter the composition of rangeland vegetation. These shi ...
... specific cover crops to provide ecosystem services, the selection of plant species can be invaluable in ranching, range management and restoration. Practices such as the intensity and timing of grazing, fertilization and subclover planting can alter the composition of rangeland vegetation. These shi ...
Malleefowl Iconic Species Project
... Motion triggered camera traps will help to monitor active Malleefowl mounds to measure threats to Malleefowl, mounds, eggs and mound maintenance by visiting fauna. Yathong NR, Nombinnie NR and SCA and Round Hill NR In the Central Mallee, the SOS Malleefowl Iconic Species Project is aiming to contrib ...
... Motion triggered camera traps will help to monitor active Malleefowl mounds to measure threats to Malleefowl, mounds, eggs and mound maintenance by visiting fauna. Yathong NR, Nombinnie NR and SCA and Round Hill NR In the Central Mallee, the SOS Malleefowl Iconic Species Project is aiming to contrib ...
Ecological Factors Affecting Community Invasibility
... Lewis) and manipulative experiments in both marine and terrestrial systems (Britton-Simmons 2006; Kennedy et al. 2002; Levine 2000; Naeem et al. 2000; Stachowicz et al. 1999, 2002a; White and Shurin 2007) generally (but not unequivocally—see Arenas et al. 2006) support the idea that increasing diver ...
... Lewis) and manipulative experiments in both marine and terrestrial systems (Britton-Simmons 2006; Kennedy et al. 2002; Levine 2000; Naeem et al. 2000; Stachowicz et al. 1999, 2002a; White and Shurin 2007) generally (but not unequivocally—see Arenas et al. 2006) support the idea that increasing diver ...
Keystone species and food webs - Philosophical Transactions of the
... for some purposes, but it is the very diversity of these terms that makes objective studies more difficult. All of them acknowledge that there is a need for clarifying the most important species in ecosystems. Although, we should also delineate a difference between species that are important for nat ...
... for some purposes, but it is the very diversity of these terms that makes objective studies more difficult. All of them acknowledge that there is a need for clarifying the most important species in ecosystems. Although, we should also delineate a difference between species that are important for nat ...
Comparative Analysis of Diversity and Similarity Indices with Special
... to calculate the expected maximum value of the indices to which the observed values can be related at any combination of sample sizes at the experimental sites. This paper examines the effects of sample size and diversity on the expected values of diversity indices and similarity indices, using vari ...
... to calculate the expected maximum value of the indices to which the observed values can be related at any combination of sample sizes at the experimental sites. This paper examines the effects of sample size and diversity on the expected values of diversity indices and similarity indices, using vari ...
Yellow-footed Rock
... working with landholders and in National Parks in the Flinders Ranges, Gawler Ranges and Olary Hills to restore the habitat of these wallabies and reduce the threats to their survival. Their numbers have grown as a result! You can help the Yellow-footed Rock-wallaby by: • visiting the Yellow-footed ...
... working with landholders and in National Parks in the Flinders Ranges, Gawler Ranges and Olary Hills to restore the habitat of these wallabies and reduce the threats to their survival. Their numbers have grown as a result! You can help the Yellow-footed Rock-wallaby by: • visiting the Yellow-footed ...
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.