Habitat Fragmentation – In Theory
... The common occurrence of habitat destruction results not only in habitat loss and habitat degradation, but also in fragmentation of the remaining habitat. A focal point for the research of many landscape ecologists is on the effects of habitat fragmentation to the individuals, populations, and ecosy ...
... The common occurrence of habitat destruction results not only in habitat loss and habitat degradation, but also in fragmentation of the remaining habitat. A focal point for the research of many landscape ecologists is on the effects of habitat fragmentation to the individuals, populations, and ecosy ...
More than a meal integrating nonfeeding interactions into food webs
... information provides some general examples for these functions func, but their exact shape will depend on the biology of the species. For trophic interactions, three types of functional responses have been defined (Holling 1959) – similar functions may be defined for nontrophic interactions but requ ...
... information provides some general examples for these functions func, but their exact shape will depend on the biology of the species. For trophic interactions, three types of functional responses have been defined (Holling 1959) – similar functions may be defined for nontrophic interactions but requ ...
Clonal growth and plant species abundance - Clo-Pla
... comparative data, which in practice are restricted to readily quantified traits (‘soft’ or ‘easy’ traits, Weiher et al., 1999; Lavorel and Garnier, 2002) that are assumed to approximate important field processes and for which data collection is relatively easy (see e.g. Westoby, 1998). However, the ...
... comparative data, which in practice are restricted to readily quantified traits (‘soft’ or ‘easy’ traits, Weiher et al., 1999; Lavorel and Garnier, 2002) that are assumed to approximate important field processes and for which data collection is relatively easy (see e.g. Westoby, 1998). However, the ...
Species Profile - Atlantic States Marine Fisheries Commission
... regardless of whether their commercial fishery would remain open. The habitat plans outline current and historical spawning and nursery habitat, threats to those habitats, and habitat restoration programs in each of the river systems. The purpose of the habitat plans is to provide a record of the ma ...
... regardless of whether their commercial fishery would remain open. The habitat plans outline current and historical spawning and nursery habitat, threats to those habitats, and habitat restoration programs in each of the river systems. The purpose of the habitat plans is to provide a record of the ma ...
A4
... much of this information needs to be researched and parameters for determining eradication defined. NRS will compile this information for each ICA species. The table below summarizes incipient invasive taxa observed at Opaeula. While the list is by no means exhaustive, it provides a good starting po ...
... much of this information needs to be researched and parameters for determining eradication defined. NRS will compile this information for each ICA species. The table below summarizes incipient invasive taxa observed at Opaeula. While the list is by no means exhaustive, it provides a good starting po ...
Ecological Inventory of Queensborough, City of New Westminster
... Fish Sampling and Watercourse Classification. The City of New Westminster developed a watercourse classification to guide development planning, maintenance and notification requirements, and riparian protection under the Riparian Areas Regulation (City of New Westminster, 2007). The classificatio ...
... Fish Sampling and Watercourse Classification. The City of New Westminster developed a watercourse classification to guide development planning, maintenance and notification requirements, and riparian protection under the Riparian Areas Regulation (City of New Westminster, 2007). The classificatio ...
keeping options alive - World Resources Report
... report must be applied in conjunction with changes in local, national, and international economic and social policies that address the root causes of biotic impoverishment. In particular, new approaches to conservation financing that don't place undue burdens on the developing world are needed (WRI ...
... report must be applied in conjunction with changes in local, national, and international economic and social policies that address the root causes of biotic impoverishment. In particular, new approaches to conservation financing that don't place undue burdens on the developing world are needed (WRI ...
Ecosystem engineers on plants: indirect facilitation of arthropod
... Abstract. Ecosystem engineering is a process by which organisms change the distribution of resources and create new habitats for other species via non-trophic interactions. Leaf-rolling caterpillars can act as ecosystem engineers because they provide shelter to secondary users. In this study, we rep ...
... Abstract. Ecosystem engineering is a process by which organisms change the distribution of resources and create new habitats for other species via non-trophic interactions. Leaf-rolling caterpillars can act as ecosystem engineers because they provide shelter to secondary users. In this study, we rep ...
Frog eat frog: exploring variables influencing
... 2006). It follows then that as important members of the ecosystem and dietary generalists, amphibians may also be food for each other. Among such instances, frogs eating frogs are often the subject of anecdotal observations (see Toledo, Ribeiro & Haddad, 2007). However, there have been relatively fe ...
... 2006). It follows then that as important members of the ecosystem and dietary generalists, amphibians may also be food for each other. Among such instances, frogs eating frogs are often the subject of anecdotal observations (see Toledo, Ribeiro & Haddad, 2007). However, there have been relatively fe ...
Herrera.1979.Oikos
... height data, on the other hand, were grouped into seven classes for the analyses: 0-1, 1-1.5, 1.5-2.25, 2.25-3.0, 3.0-5.0, 5.0-7.5 and 7.5-11 m. Whenever a heterospecific flock was sighted, its composition and size were recorded. A flock was considered to be any group of two or more individuals in w ...
... height data, on the other hand, were grouped into seven classes for the analyses: 0-1, 1-1.5, 1.5-2.25, 2.25-3.0, 3.0-5.0, 5.0-7.5 and 7.5-11 m. Whenever a heterospecific flock was sighted, its composition and size were recorded. A flock was considered to be any group of two or more individuals in w ...
A Ravine`s Web of Life - Park District of Highland Park
... and animals cannot create (or destroy) extra energy. They can only change energy from one form to another. Every ecosystem has its own unique set of producers, primary consumers, secondary consumers, and decomposers. Below is a list of energy sources, organisms and groups of organisms that may inhab ...
... and animals cannot create (or destroy) extra energy. They can only change energy from one form to another. Every ecosystem has its own unique set of producers, primary consumers, secondary consumers, and decomposers. Below is a list of energy sources, organisms and groups of organisms that may inhab ...
New Zealand Journal of Forestry Science
... Given the increasing problem of invasions by forest insects, there is an urgent need to develop effective strategies for managing them. Trends of escalating globalisation impede ongoing efforts to limit the arrival of new species. Consequently, either preventing establishment (through eradication) o ...
... Given the increasing problem of invasions by forest insects, there is an urgent need to develop effective strategies for managing them. Trends of escalating globalisation impede ongoing efforts to limit the arrival of new species. Consequently, either preventing establishment (through eradication) o ...
Nasua nasua - CIRCABC
... individuals as pets, a decade earlier, which were located in a rural hotel, where an escape or release may have occurred (Mayol et al, 2009). Currently, the property no longer holds this species, even though there are at least five or six other animals in private collections in the island. Some of t ...
... individuals as pets, a decade earlier, which were located in a rural hotel, where an escape or release may have occurred (Mayol et al, 2009). Currently, the property no longer holds this species, even though there are at least five or six other animals in private collections in the island. Some of t ...
Leave No Trace - Williamson County
... Large groups can reduce their impact by: 1) breaking into smaller groups to hike and camp, 2) confining their activities to already impacted areas away from other groups, 3) meeting infrequently as a large group and only on durable surfaces, and 4) practicing quiet and courteous behavior. ...
... Large groups can reduce their impact by: 1) breaking into smaller groups to hike and camp, 2) confining their activities to already impacted areas away from other groups, 3) meeting infrequently as a large group and only on durable surfaces, and 4) practicing quiet and courteous behavior. ...
Marine Fauna
... locations of sea lion haul out areas, breeding islands and populations at those areas, but there may be very little information for the remaining life stages. For many other species, including some species of conservation listed marine fauna, little information is available regarding recruitment rat ...
... locations of sea lion haul out areas, breeding islands and populations at those areas, but there may be very little information for the remaining life stages. For many other species, including some species of conservation listed marine fauna, little information is available regarding recruitment rat ...
High trophic overlap within the seabird community of Argentinean
... structure of a complex assemblage of seabirds and determine the degree of ecological overlap/segregation among species. More specifically, we investigated trophic structure at multiple scales: (1) Patagonia in relation to seabird communities elsewhere; (2) within the Patagonian seabird community (in ...
... structure of a complex assemblage of seabirds and determine the degree of ecological overlap/segregation among species. More specifically, we investigated trophic structure at multiple scales: (1) Patagonia in relation to seabird communities elsewhere; (2) within the Patagonian seabird community (in ...
Environmental context determines multi-trophic effects of consumer species loss
... O’Gorman & Emmerson, 2009). A recent field experiment by O’Connor et al. (in press) found that two species of marine benthic predators (the crab, Carcinus maenas and the whelk, Nucella lapillus) both enhanced macroalgal cover indirectly by altering the abundance of their prey (mussels or gastropod g ...
... O’Gorman & Emmerson, 2009). A recent field experiment by O’Connor et al. (in press) found that two species of marine benthic predators (the crab, Carcinus maenas and the whelk, Nucella lapillus) both enhanced macroalgal cover indirectly by altering the abundance of their prey (mussels or gastropod g ...
LOCAL NATURE CONSERVATION SITES
... Conservation Sites (LNCS) as part of the family of areas given protection from development except where public benefits clearly outweigh the nature conservation value of the site. The plan notes that the LNCS were developed through consultation with expert stakeholders and they replace the previous ...
... Conservation Sites (LNCS) as part of the family of areas given protection from development except where public benefits clearly outweigh the nature conservation value of the site. The plan notes that the LNCS were developed through consultation with expert stakeholders and they replace the previous ...
Pollution, habitat loss, fishing, and climate change as critical threats
... climate change; and toxic algal poisoning and disease. Habitat loss, pollution, and fishing, all factors humans can readily mitigate, remain the primary threats for penguin species. Their future resilience to further climate change impacts will almost certainly depend on addressing current threats t ...
... climate change; and toxic algal poisoning and disease. Habitat loss, pollution, and fishing, all factors humans can readily mitigate, remain the primary threats for penguin species. Their future resilience to further climate change impacts will almost certainly depend on addressing current threats t ...
Limiting similarity, species packing, and the shape of
... 1972; May, 1974a,b) were especially influential. In these analyses, competition was modeled as an overlap of resource-utilization functions, implying that resources contributing to the growth of one species become unavailable to other species. This form of competition gives rise to competition kernel ...
... 1972; May, 1974a,b) were especially influential. In these analyses, competition was modeled as an overlap of resource-utilization functions, implying that resources contributing to the growth of one species become unavailable to other species. This form of competition gives rise to competition kernel ...
Competition - Mark A. Hixon
... consumer. Importantly, just because two organisms share a resource does not necessarily mean that they compete for it (e.g., all marine fishes share oxygen as a resource). The shared resource must be in “short supply,” meaning that its abundance limits the reproductive success of the individual (via ...
... consumer. Importantly, just because two organisms share a resource does not necessarily mean that they compete for it (e.g., all marine fishes share oxygen as a resource). The shared resource must be in “short supply,” meaning that its abundance limits the reproductive success of the individual (via ...
spatial variation in molluscan assemblages from coralline turfs of
... and the Bray – Curtis similarity coefficient (Bray & Curtis, 1957). Hypotheses about differences in species richness, evenness of assemblages J0 (Pielou, 1975), and abundances of major molluscan groups were tested with nested analyses of variance (ANOVA). Except for evenness, all univariate molluscan ...
... and the Bray – Curtis similarity coefficient (Bray & Curtis, 1957). Hypotheses about differences in species richness, evenness of assemblages J0 (Pielou, 1975), and abundances of major molluscan groups were tested with nested analyses of variance (ANOVA). Except for evenness, all univariate molluscan ...
Review of the Impact of Invasive Alien Species on Species Protected
... An assessment was undertaken of those CMS listed species that are known to be invasive in their introduced range. Only three species on the CMS Appendix I and II are well known IAS. They include introduced population of aoudad (Ammotragus lervia), mouflon (Ovis ammon) and the Sacred ibis (Threskiorn ...
... An assessment was undertaken of those CMS listed species that are known to be invasive in their introduced range. Only three species on the CMS Appendix I and II are well known IAS. They include introduced population of aoudad (Ammotragus lervia), mouflon (Ovis ammon) and the Sacred ibis (Threskiorn ...
Wildlife Management Course Outline
... 2. Summarize the role of harvest regulations in managing wildlife populations 3. Compare and contrast the official position of various groups and organizations on regulated hunting as a wildlife management tool 4. Discuss the role of hunting as a recreational pursuit and the economic impact of hunti ...
... 2. Summarize the role of harvest regulations in managing wildlife populations 3. Compare and contrast the official position of various groups and organizations on regulated hunting as a wildlife management tool 4. Discuss the role of hunting as a recreational pursuit and the economic impact of hunti ...
Replacing Sources with Sinks: When Do Populations Go Down the
... the high-quality habitat’s productivity to the low-quality habitat’s productivity, however, (2) if the created habitat ...
... the high-quality habitat’s productivity to the low-quality habitat’s productivity, however, (2) if the created habitat ...
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.