Pimm_pages 1..10 - Department of Geographical Sciences
... and such species are typically newer discoveries. The numbers of known species with very small ranges are increasing quickly, even in well-known taxa. They are geographically concentrated and are disproportionately likely to be threatened or already extinct. We expect unknown species to share these ...
... and such species are typically newer discoveries. The numbers of known species with very small ranges are increasing quickly, even in well-known taxa. They are geographically concentrated and are disproportionately likely to be threatened or already extinct. We expect unknown species to share these ...
Appendix 1. Revision of the questions on the environmental impact
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about i ...
... In this question we rate the current environmental impact in other invaded regions that can be used as indicator for determining the potential environmental impact in the PRA area (Q6.09). If the species has not invaded any other area, or if the invasion is too recent and too little is known about i ...
Protecting threatened species and ecological communities from
... opportunities and may result in less effective control. ...
... opportunities and may result in less effective control. ...
Life history strategies, population regulation, and implications for
... and coral reefs (e.g., brood-bearing syngnathids, live-bearing elasmobranches). It is important to keep in mind that diverse life history strategies may be present among species inhabiting a single habitat (Winemiller 1989). Species with different ecological niches, body sizes, anti-predator defense ...
... and coral reefs (e.g., brood-bearing syngnathids, live-bearing elasmobranches). It is important to keep in mind that diverse life history strategies may be present among species inhabiting a single habitat (Winemiller 1989). Species with different ecological niches, body sizes, anti-predator defense ...
Biodiversity, productivity and stability in real food webs
... productivity and stability. One microcosm study of a simple plant-based food web documented strong effects of composition, but weak effects of diversity on community stability [29]. Plant biomass and productivity were affected strongly by both composition and diversity. Although more diverse communi ...
... productivity and stability. One microcosm study of a simple plant-based food web documented strong effects of composition, but weak effects of diversity on community stability [29]. Plant biomass and productivity were affected strongly by both composition and diversity. Although more diverse communi ...
Ecological Impacts of Non-native Freshwater Fishes (Cucherousset
... obtained from field surveys were classified as “observational.” In total, 75 articles published between 1999 and 2009 were analyzed (Appendix). We found that publication activity was greater at the individual and population levels, representing 28.6% and 26.2% of papers, respectively (Figure 1A). In ...
... obtained from field surveys were classified as “observational.” In total, 75 articles published between 1999 and 2009 were analyzed (Appendix). We found that publication activity was greater at the individual and population levels, representing 28.6% and 26.2% of papers, respectively (Figure 1A). In ...
Anthropomorphized species as tools for
... animals risks suggesting that most species are not worthy of conservation because they are not like humans in the ‘‘right’’ ways. This would produce an anthropocentric, two-tiered conservation agenda favoring a very small percentage of biodiversity (excluding, for example, all plants). It would also ...
... animals risks suggesting that most species are not worthy of conservation because they are not like humans in the ‘‘right’’ ways. This would produce an anthropocentric, two-tiered conservation agenda favoring a very small percentage of biodiversity (excluding, for example, all plants). It would also ...
Systematic measurement of effectiveness for conservation of
... resource can be identified, there are over-arching issues of land tenure, responsible agencies and appropriate land management. This greatly complicates the decision-making process because there may be a multitude of goals, which unless clearly stated and owned by all parties, can lead to conflict ( ...
... resource can be identified, there are over-arching issues of land tenure, responsible agencies and appropriate land management. This greatly complicates the decision-making process because there may be a multitude of goals, which unless clearly stated and owned by all parties, can lead to conflict ( ...
Countryside Biogeography of Neotropical Mammals - FMVZ-UNAM
... conservation potential of countrysides for mammal communities. Undertaking such studies is particularly important in the Neotropics, where a major fraction of global biodiversity is threatened by habitat loss and fragmentation. A possible counterargument is that “countryside” is what the world will ...
... conservation potential of countrysides for mammal communities. Undertaking such studies is particularly important in the Neotropics, where a major fraction of global biodiversity is threatened by habitat loss and fragmentation. A possible counterargument is that “countryside” is what the world will ...
PARRAMATTA RIVER CATCHMENT NATIVE HABITATS AND FAUNA
... This report is prepared by APPLIED ECOLOGY Pty Limited for its clients' purposes only. The contents of this report are provided expressly for the named client for its own use. No responsibility is accepted for the use of or reliance upon this report in whole or in part by any third party. This repor ...
... This report is prepared by APPLIED ECOLOGY Pty Limited for its clients' purposes only. The contents of this report are provided expressly for the named client for its own use. No responsibility is accepted for the use of or reliance upon this report in whole or in part by any third party. This repor ...
Milkwood forests under attack by gypsy moths
... E. metathennes, a useful comparison can be made with a very destructive species of gypsy moth Lymantria dispar which is a major pest in North America where it was introduced more than a century ago from Europe and Asia. In its new country, it feeds on more than 100 species of woody plants (although ...
... E. metathennes, a useful comparison can be made with a very destructive species of gypsy moth Lymantria dispar which is a major pest in North America where it was introduced more than a century ago from Europe and Asia. In its new country, it feeds on more than 100 species of woody plants (although ...
The role of behavioural variation in the invasion of
... and invasive cane toads in northern Australia have evolved increased dispersal rates on the invasion front relative to their conspecifics from older, established populations (Phillips et al. 2010b; Phillips et al. 2008a). Empirical evidence for the evolution of behaviours facilitating population gro ...
... and invasive cane toads in northern Australia have evolved increased dispersal rates on the invasion front relative to their conspecifics from older, established populations (Phillips et al. 2010b; Phillips et al. 2008a). Empirical evidence for the evolution of behaviours facilitating population gro ...
Fouling Community Studies in the Indian River
... The colonial ascidian Diplbsoma macdonaldi was common most of the year however the colonies reached greater size in the spring, often covering large areas of the plates. Some of the Botryllinae tunicates, Botryllus planus, Botrylloides nigrum and Symplegma viride were able to colonize areas on top o ...
... The colonial ascidian Diplbsoma macdonaldi was common most of the year however the colonies reached greater size in the spring, often covering large areas of the plates. Some of the Botryllinae tunicates, Botryllus planus, Botrylloides nigrum and Symplegma viride were able to colonize areas on top o ...
Common Name: CHATTOOGA RIVER CRAYFISH Scientific Name
... mother by a thread. After the juveniles molt for the second time, they are free of the mother, but stay close and will hold on to her for some time. Eventually they move off on their own. Crayfishes molt 6 or 7 times during their first year of life and most are probably able to reproduce by the end ...
... mother by a thread. After the juveniles molt for the second time, they are free of the mother, but stay close and will hold on to her for some time. Eventually they move off on their own. Crayfishes molt 6 or 7 times during their first year of life and most are probably able to reproduce by the end ...
corridors may not improve the conservation value of small reserves
... A priori predictions as to gap sensitivity Gap-crossing behavior.—Gap-crossing behavior was studied at Calling Lake by examining capture rates of birds in mist nets stretched across the buffer strips that connected the reserves, relative to observations of birds crossing the clearcuts that separated ...
... A priori predictions as to gap sensitivity Gap-crossing behavior.—Gap-crossing behavior was studied at Calling Lake by examining capture rates of birds in mist nets stretched across the buffer strips that connected the reserves, relative to observations of birds crossing the clearcuts that separated ...
Species diversity, invasion success, and ecosystem functioning
... et al. 1999, 2002a), although sometimes competition for food and space can be difficult to separate (Buss 1979). Because these communities readily occur in harbors and ports, they have been colonized by many species from other biogeographic provinces that have been transported on the bottom of boat ...
... et al. 1999, 2002a), although sometimes competition for food and space can be difficult to separate (Buss 1979). Because these communities readily occur in harbors and ports, they have been colonized by many species from other biogeographic provinces that have been transported on the bottom of boat ...
Evolution of weaponry in female bovids
... habitats are more exposed, visible from longer distances, and would be more likely to benefit from the presence of horns for defence against predators. While analysis I tested shoulder height and habitat openness separately, we sought out a composite measure of conspicuousness that simultaneously ac ...
... habitats are more exposed, visible from longer distances, and would be more likely to benefit from the presence of horns for defence against predators. While analysis I tested shoulder height and habitat openness separately, we sought out a composite measure of conspicuousness that simultaneously ac ...
Shifts of the feeding niche along the size dimension of three
... a sedimentary embayment on the coast of Rio de Janeiro State in Southeastern Brazil. The bay has a surface area of approximately 450 km2 and is open to the Atlantic Ocean on its western boundary. This microtidal system is predominantly polyhaline (salinity average = 30 ‰) and the mean temperature ra ...
... a sedimentary embayment on the coast of Rio de Janeiro State in Southeastern Brazil. The bay has a surface area of approximately 450 km2 and is open to the Atlantic Ocean on its western boundary. This microtidal system is predominantly polyhaline (salinity average = 30 ‰) and the mean temperature ra ...
Case studies in the conservation of biodiversity: degradation and
... and between them and the governments of the countries in which they reside. A serious problem arises in many arid countries from the concentration of resource control and responsibility for environmental policy decisions primarily in the hands of urban men. Ownership and control of land and biotic r ...
... and between them and the governments of the countries in which they reside. A serious problem arises in many arid countries from the concentration of resource control and responsibility for environmental policy decisions primarily in the hands of urban men. Ownership and control of land and biotic r ...
abstracts from the 6th north american echinoderm conference
... 25 psu after 30 min of exposure. At 22 psu 89% of L. clathrata and 56% of L. lawrencei individuals righted themselves. At 20 psu 32% of L. clathrata and 0% L. lawrencei individuals righted themselves. Righting time increased at salinities below 30 psu for both species. Righting time was shorter for ...
... 25 psu after 30 min of exposure. At 22 psu 89% of L. clathrata and 56% of L. lawrencei individuals righted themselves. At 20 psu 32% of L. clathrata and 0% L. lawrencei individuals righted themselves. Righting time increased at salinities below 30 psu for both species. Righting time was shorter for ...
Linking Nature`s services to ecosystems: some general ecological
... are classified according to certain ecological criteria: (1) are the goods or the object of the service internal to the ecosystem or shared with other systems? (2) are the goods or object of the service of biotic or abiotic origin? and (3) at which level of ecological hierarchy are the goods or serv ...
... are classified according to certain ecological criteria: (1) are the goods or the object of the service internal to the ecosystem or shared with other systems? (2) are the goods or object of the service of biotic or abiotic origin? and (3) at which level of ecological hierarchy are the goods or serv ...
Few Ant Species Play a Central Role Linking Different Plant
... and fruit pulp and exudates), and ants providing diverse benefits in return, including protection against natural enemies [15], seed dispersal [16], and even pollination [17]. Another widespread resource indirectly provided by plants is honeydew, an exudate rich in carbohydrates and amino acids, whi ...
... and fruit pulp and exudates), and ants providing diverse benefits in return, including protection against natural enemies [15], seed dispersal [16], and even pollination [17]. Another widespread resource indirectly provided by plants is honeydew, an exudate rich in carbohydrates and amino acids, whi ...
Ecology Connections 5. GUILDS One reason ecologists study
... produce swollen thorns and leaves with nectaries, becoming attractive targets for colonization. 3) Small saplings and their new shoots: Small saplings become available when seedlings grow into saplings. New shoots grow from the base of these small saplings when they are eaten by herbivores. The sapl ...
... produce swollen thorns and leaves with nectaries, becoming attractive targets for colonization. 3) Small saplings and their new shoots: Small saplings become available when seedlings grow into saplings. New shoots grow from the base of these small saplings when they are eaten by herbivores. The sapl ...
Foliicolous lichens as model organisms to study tropical rainforest
... on a tree in Papua New Guinea, and up to 80 foliicolous species where found on individual leaves in Costa Rica and Ecuador (LÜCKING 1995a; LÜCKING & M ATZER 2001). The number of liehen species to occur in Costa Rica, within an area of 50,000 km2, is estimated at 3,000 (LÜCKIN G et al. 2004). A tropi ...
... on a tree in Papua New Guinea, and up to 80 foliicolous species where found on individual leaves in Costa Rica and Ecuador (LÜCKING 1995a; LÜCKING & M ATZER 2001). The number of liehen species to occur in Costa Rica, within an area of 50,000 km2, is estimated at 3,000 (LÜCKIN G et al. 2004). A tropi ...
Bifrenaria
Bifrenaria, abbreviated Bif. in horticultural trade, is a genus of plant in family Orchidaceae. It contains 20 species found in Panama, Trinidad and South America. There are no known uses for them, but their abundant, and at first glance artificial, flowers, make them favorites of orchid growers.The genus can be split in two clearly distinct groups: one of highly robust plants with large flowers, that encompass the first species to be classified under the genus Bifrenaria; other of more delicate plants with smaller flowers occasionally classified as Stenocoryne or Adipe. There are two additional species that are normally classified as Bifrenaria, but which molecular analysis indicate to belong to different orchid groups entirely. One is Bifrenaria grandis which is endemic to Bolívia and which is now placed in Lacaena, and Bifrenaria steyermarkii, an inhabitant of the northern Amazon Forest, which does not have an alternative classification.