Invasions: the trail behind, the path ahead, and a test
... the study of rapid evolution in introduced species. Several aspects of species introductions can stimulate evolutionary change (Vellend et al. 2007). A small fraction of the source population is sampled (whether intentionally or unintentionally), often generating founder effects and genetic bottlene ...
... the study of rapid evolution in introduced species. Several aspects of species introductions can stimulate evolutionary change (Vellend et al. 2007). A small fraction of the source population is sampled (whether intentionally or unintentionally), often generating founder effects and genetic bottlene ...
Abstract, 1. Introduction, 2. Methodology and 3. Ecological character
... which are not well represented in existing protected natural areas, and to retain the greatest possible diversity of landform and vegetation patterns consistent with what was originally present. To achieve this, representative biological and landscape features that are common or extensive within an ...
... which are not well represented in existing protected natural areas, and to retain the greatest possible diversity of landform and vegetation patterns consistent with what was originally present. To achieve this, representative biological and landscape features that are common or extensive within an ...
Patterns of species diversity and phylogenetic structure of vascular
... relatedness of species occurring in a community represents the balance of different ecological and evolutionary processes that determine their distribution and abundance (Webb et al. 2002). Nonrandom phylogenetic structure of communities at large-scales is the result of overlap of species ranges cau ...
... relatedness of species occurring in a community represents the balance of different ecological and evolutionary processes that determine their distribution and abundance (Webb et al. 2002). Nonrandom phylogenetic structure of communities at large-scales is the result of overlap of species ranges cau ...
The ecology of inland waters
... groups of five but created separate groups from the older and the younger participants. The topics for discussion were ‘Where is freshwater ecology going?’ and ‘What collaborations might be interesting?’ Discussions ranged more widely than these, however, as well they should, with the independent mi ...
... groups of five but created separate groups from the older and the younger participants. The topics for discussion were ‘Where is freshwater ecology going?’ and ‘What collaborations might be interesting?’ Discussions ranged more widely than these, however, as well they should, with the independent mi ...
Fluctuating resources in plant communities: a general theory of invasibility FORUM
... invading species must have access to available resources, e.g. light, nutrients, and water, and that a species will enjoy greater success in invading a community if it does not encounter intense competition for these resources from resident species. This assumption is grounded in the theory that com ...
... invading species must have access to available resources, e.g. light, nutrients, and water, and that a species will enjoy greater success in invading a community if it does not encounter intense competition for these resources from resident species. This assumption is grounded in the theory that com ...
An emerging synthesis between community ecology and
... to ecological changes in a herbivore community. Consider a plant population that contains additive genetic variation in a plant defensive trait (e.g. secondary compounds, trichomes or leaf toughness) (a), and exhibits a negative genetic correlation with insect herbivore richness on individual plants ...
... to ecological changes in a herbivore community. Consider a plant population that contains additive genetic variation in a plant defensive trait (e.g. secondary compounds, trichomes or leaf toughness) (a), and exhibits a negative genetic correlation with insect herbivore richness on individual plants ...
Measuring Farmland Biodiversity
... Thierry Fabian, an agricultural engineer, is the head of the French Institute for Designations of Origin in Caen. Obtaining the AOC label for cheeses, wine, or cider helps farmers market their products. Fabian wants to evaluate whether the traditional farming practices related to those products yiel ...
... Thierry Fabian, an agricultural engineer, is the head of the French Institute for Designations of Origin in Caen. Obtaining the AOC label for cheeses, wine, or cider helps farmers market their products. Fabian wants to evaluate whether the traditional farming practices related to those products yiel ...
Grassland Ecosystems - Sala Lab
... natural types of grassland having a very high level of plant species diversity, at times approaching that seen in mainland tropical forests (Groombridge and Jenkins, 2002). Grasslands are dominated by grasses (family Gramineae excluding bamboos). The Pampa region in Argentina represents some of the ...
... natural types of grassland having a very high level of plant species diversity, at times approaching that seen in mainland tropical forests (Groombridge and Jenkins, 2002). Grasslands are dominated by grasses (family Gramineae excluding bamboos). The Pampa region in Argentina represents some of the ...
Chapter 17 Origin of Species
... biological entity, must exist in an ecological niche • Can a population of organisms which no longer has a niche still be a biological entity? • Only 400-500 Siberian tigers still exist within their range ...
... biological entity, must exist in an ecological niche • Can a population of organisms which no longer has a niche still be a biological entity? • Only 400-500 Siberian tigers still exist within their range ...
JMS 68/3 pps. 235-241 FINAL
... O. H. K. LEE & G. A. WILLIAMS The activity patterns of Hong Kong mangrove littorinids are similar to mangrove littorinids in Australia, where foraging occurred mainly at night (Reid, 1992b). In the mangrove habitat in Hong Kong, air temperature decreases and relative humidity increases in the eveni ...
... O. H. K. LEE & G. A. WILLIAMS The activity patterns of Hong Kong mangrove littorinids are similar to mangrove littorinids in Australia, where foraging occurred mainly at night (Reid, 1992b). In the mangrove habitat in Hong Kong, air temperature decreases and relative humidity increases in the eveni ...
File
... evolves in black snakes living in areas with cane toads. If the researchers repeated this experiment, predict how the results would change for areas where cane toads have been present for 40–60 years. a) A much higher percentage of black snakes in those areas would eat the cane toads offered to them ...
... evolves in black snakes living in areas with cane toads. If the researchers repeated this experiment, predict how the results would change for areas where cane toads have been present for 40–60 years. a) A much higher percentage of black snakes in those areas would eat the cane toads offered to them ...
Rocky shores - The Institute of Biology of Ireland
... Many man-made features such as pier walls, sea walls and groynes can often provide welcome habitats where there may otherwise only be mobile sandy sediments which provide no foothold for sessile animals and marine algae. Artificial structures provide habitat for many of the species found on natural ...
... Many man-made features such as pier walls, sea walls and groynes can often provide welcome habitats where there may otherwise only be mobile sandy sediments which provide no foothold for sessile animals and marine algae. Artificial structures provide habitat for many of the species found on natural ...
prescribed burn program - Royal Botanical Gardens
... Native plants that depend on our prairies and savannahs ...
... Native plants that depend on our prairies and savannahs ...
Species Invasions Exceed Extinctions on Islands Worldwide: A
... a detailed list of the criteria used in selecting islands). We also noted which islands had been occupied by humans before European colonization; on these islands, the extinction of natives and the introduction of nonnatives may have gone unrecorded, occurring before Europeans arrived. Further, isla ...
... a detailed list of the criteria used in selecting islands). We also noted which islands had been occupied by humans before European colonization; on these islands, the extinction of natives and the introduction of nonnatives may have gone unrecorded, occurring before Europeans arrived. Further, isla ...
Competition, predation and species responses to environmental
... We recorded density for each protist species as the number of individuals per ml and log transformed the data (log10(individuals/ml/1)) to reduce heteroscedasticity in preparation for statistical analysis. We calculated geometric mean density over time for each species, excluding the post-extinctio ...
... We recorded density for each protist species as the number of individuals per ml and log transformed the data (log10(individuals/ml/1)) to reduce heteroscedasticity in preparation for statistical analysis. We calculated geometric mean density over time for each species, excluding the post-extinctio ...
Seaside Bird`s-foot Lotus (Lotus formosissimus)
... Estimated extent of occurrence Actual EO of 4 km² has been changed to the value of the IAO as per COSEWIC convention when EO is < IAO. Index of area of occupancy (IAO) Is the total population severely fragmented? Number of “locations” Is there a continuing decline in extent of occurrence? Is there ...
... Estimated extent of occurrence Actual EO of 4 km² has been changed to the value of the IAO as per COSEWIC convention when EO is < IAO. Index of area of occupancy (IAO) Is the total population severely fragmented? Number of “locations” Is there a continuing decline in extent of occurrence? Is there ...
- Wiley Online Library
... exclusive phenomenological processes have been widely discussed as driving this relationship. The first is complementarity, whereby more diverse assemblages produce more biomass than what is expected based on the performance of individual species in monoculture (Loreau & Hector 2001). The second is ...
... exclusive phenomenological processes have been widely discussed as driving this relationship. The first is complementarity, whereby more diverse assemblages produce more biomass than what is expected based on the performance of individual species in monoculture (Loreau & Hector 2001). The second is ...
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 ...
Biologist letter on red-legged frog habitat
... Many amphibian species are in decline globally. These losses have been much publicized and biologists are often asked for an explanation of their cause. Factors leading to a reduction in amphibian numbers are usually numerous, species specific, and many variables may interact synergistically (e.g., ...
... Many amphibian species are in decline globally. These losses have been much publicized and biologists are often asked for an explanation of their cause. Factors leading to a reduction in amphibian numbers are usually numerous, species specific, and many variables may interact synergistically (e.g., ...
The role of environmental generalist species in ecosystem function
... ranging from 4 to 100 species. Community dynamics were simulated under constant, pulsed, and cyclical environmental conditions until equilibrium or quasi-equilibrium conditions were obtained. We compared ecosystem function, as reflected in total biomass, proportion of initial species that coexist th ...
... ranging from 4 to 100 species. Community dynamics were simulated under constant, pulsed, and cyclical environmental conditions until equilibrium or quasi-equilibrium conditions were obtained. We compared ecosystem function, as reflected in total biomass, proportion of initial species that coexist th ...
Effects of trophic similarity on community composition
... obtained by averaging the similarity between each species and its most similar species across all species within the trophic level considered. We consider both ‘fundamental’ and ‘realised’ measures of trophic similarity. Unlike the independence of phylogenetic distance between two species on the com ...
... obtained by averaging the similarity between each species and its most similar species across all species within the trophic level considered. We consider both ‘fundamental’ and ‘realised’ measures of trophic similarity. Unlike the independence of phylogenetic distance between two species on the com ...
Parasites that change predator or prey behaviour can have keystone
... There is an increasing realization that parasitism can play as pivotal a role as predation in structuring biological communities, often via indirect interactions with non-host species [1,2]. Indirect interactions occur when the impact of one species on another affects populations of a third species; ...
... There is an increasing realization that parasitism can play as pivotal a role as predation in structuring biological communities, often via indirect interactions with non-host species [1,2]. Indirect interactions occur when the impact of one species on another affects populations of a third species; ...
mainstreaming biodiversity
... in the ESCWA region in 2006, representing 17 per cent of the region’s species of mammals, registering an increase of 49 per cent since 2002. • A total of 145 species of birds were threatened with extinction in the ESCWA region in 2006, representing 14 per cent of such species, registering an increa ...
... in the ESCWA region in 2006, representing 17 per cent of the region’s species of mammals, registering an increase of 49 per cent since 2002. • A total of 145 species of birds were threatened with extinction in the ESCWA region in 2006, representing 14 per cent of such species, registering an increa ...
biophysical overview of the laurentian channel
... distribution, and can be influenced by occasional large catches. These trawl surveys also do not capture large pelagic fish and most sharks. Nonetheless, it was considered that this provided a reasonable snapshot of relative distribution of demeral species inside and outside the AOI. Redfish species ...
... distribution, and can be influenced by occasional large catches. These trawl surveys also do not capture large pelagic fish and most sharks. Nonetheless, it was considered that this provided a reasonable snapshot of relative distribution of demeral species inside and outside the AOI. Redfish species ...
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.