7th Annual EFJ Public Lecture - The Environmental Foundation of
... are those found only in particular places, such as on particular islands – like Jamaica. The Caribbean is one of 25 recognized global hotspots, and Jamaica is regarded as a ‘hotspot within a hotspot’. Indeed, the ‘Land of Wood and Water’ boasts an impressive list of endemic species – unique forms of ...
... are those found only in particular places, such as on particular islands – like Jamaica. The Caribbean is one of 25 recognized global hotspots, and Jamaica is regarded as a ‘hotspot within a hotspot’. Indeed, the ‘Land of Wood and Water’ boasts an impressive list of endemic species – unique forms of ...
Energetic Adaptations Along a Broad Latitudinal Gradient
... rowth of poikilotherms is affected by the environment (e.g., seasona.! temperature) and genotype (Roff 1992) as well as interactions between these two factors (Conover and Sd1Ul ~l 1995). Altbough tllis is well. accepted, models of population, community, or ecosystem structure often assume that grow ...
... rowth of poikilotherms is affected by the environment (e.g., seasona.! temperature) and genotype (Roff 1992) as well as interactions between these two factors (Conover and Sd1Ul ~l 1995). Altbough tllis is well. accepted, models of population, community, or ecosystem structure often assume that grow ...
Definitions of overfishing from an ecosystem
... specific index value is not necessarily associated with an optimum resource state. While arbitrary thresholds may be established (a minimum slope of the size spectrum, a minimum diversity index, etc.), it is not possible to predict how specific management measures would affect these metrics. More com ...
... specific index value is not necessarily associated with an optimum resource state. While arbitrary thresholds may be established (a minimum slope of the size spectrum, a minimum diversity index, etc.), it is not possible to predict how specific management measures would affect these metrics. More com ...
Cultural Keystone Species: Implications for Ecological
... ABSTRACT. Ecologists have long recognized that some species, by virtue of the key roles they play in the overall structure and functioning of an ecosystem, are essential to its integrity; these are known as keystone species. Similarly, in human cultures everywhere, there are plants and animals that ...
... ABSTRACT. Ecologists have long recognized that some species, by virtue of the key roles they play in the overall structure and functioning of an ecosystem, are essential to its integrity; these are known as keystone species. Similarly, in human cultures everywhere, there are plants and animals that ...
PDF - Oxford Academic - Oxford University Press
... fracture frequency is examined on a per-individual basis for comparison of extant carnivorans with the bat species described by Fenton et al. (1998) because that is the metric they used. The alternative per-tooth measure is used for all remaining analyses because one of the primary intents of this p ...
... fracture frequency is examined on a per-individual basis for comparison of extant carnivorans with the bat species described by Fenton et al. (1998) because that is the metric they used. The alternative per-tooth measure is used for all remaining analyses because one of the primary intents of this p ...
Biodiversity effects on ecosystem functioning: emerging issues and
... Compared to terrestrial systems, aquatic ecosystems are characterised by greater propagule and material exchange, often steeper physical and chemical gradients, more rapid biological processes and, in marine systems, higher metazoan phylogenetic diversity. These characteristics limit the potential t ...
... Compared to terrestrial systems, aquatic ecosystems are characterised by greater propagule and material exchange, often steeper physical and chemical gradients, more rapid biological processes and, in marine systems, higher metazoan phylogenetic diversity. These characteristics limit the potential t ...
D 56. Shachak et al. 2008. Woody sp.as landscape modulators
... usually associated with bioturbation caused by burrowing animals (Whitford and Kay 1999, Reichman and Seabloom 2002). By mixing detritus with mineral soil, earthworms increase the rate of mineralization and redistribute nutrients (Darwin 1881, Meysman et al. 2006). By transporting saline soil from b ...
... usually associated with bioturbation caused by burrowing animals (Whitford and Kay 1999, Reichman and Seabloom 2002). By mixing detritus with mineral soil, earthworms increase the rate of mineralization and redistribute nutrients (Darwin 1881, Meysman et al. 2006). By transporting saline soil from b ...
Calidrid conservation: unrequited needs
... of shorebirds using the site and, as such, sites of regional and hemispheric importance are defined as those being used by at least 20,000 and 500,000 individuals, respectively (Bildstein et al. 1991). Page et al. (1999) determined that targeting sites for conservation based on the percentage of the ...
... of shorebirds using the site and, as such, sites of regional and hemispheric importance are defined as those being used by at least 20,000 and 500,000 individuals, respectively (Bildstein et al. 1991). Page et al. (1999) determined that targeting sites for conservation based on the percentage of the ...
WB_A_53-56
... in a community over time is called ecological succession. Over the course of succession, the number of different species usually increases. Primary succession begins in areas with no remnants of an older community. It occurs on bare rock surfaces where no soil exists. The first species to live in an ...
... in a community over time is called ecological succession. Over the course of succession, the number of different species usually increases. Primary succession begins in areas with no remnants of an older community. It occurs on bare rock surfaces where no soil exists. The first species to live in an ...
Propagule supply controls grazer community structure and primary
... propagule additions remained constant and positive across the gradient of diversity represented in the single treatments (SI Text), as indicated by the lack of a significant interaction between supply magnitude and frequency treatments (Fig. 1 A and B). In other words, initially high supply magnitud ...
... propagule additions remained constant and positive across the gradient of diversity represented in the single treatments (SI Text), as indicated by the lack of a significant interaction between supply magnitude and frequency treatments (Fig. 1 A and B). In other words, initially high supply magnitud ...
State of the Eastern Scotian Shelf Ecosystem
... originates from the Gulf of St. Lawrence with anticyclonic circulation tending to occur over the banks and cyclonic circulation around the basins. The northeastern region of the Shelf is the southern- most limit of winter sea ice in the Atlantic Ocean. This document provides an assessment of the cur ...
... originates from the Gulf of St. Lawrence with anticyclonic circulation tending to occur over the banks and cyclonic circulation around the basins. The northeastern region of the Shelf is the southern- most limit of winter sea ice in the Atlantic Ocean. This document provides an assessment of the cur ...
Species` Distribution Modeling for Conservation Educators and
... for this purpose (Guisan and Thuiller, 2005). These models commonly utilize associations between environmental variables and known species’ occurrence records to identify environmental conditions within which populations can be maintained. The spatial distribution of environments that are suitable f ...
... for this purpose (Guisan and Thuiller, 2005). These models commonly utilize associations between environmental variables and known species’ occurrence records to identify environmental conditions within which populations can be maintained. The spatial distribution of environments that are suitable f ...
Disturbance regime and limits on benefits of - Everglades-HUB
... Refuge habitats increase survival rate and recovery time of populations experiencing environmental disturbance, but limits on the ability of refuges to buffer communities are poorly understood. We hypothesized that importance of refuges in preventing population declines and alteration in community st ...
... Refuge habitats increase survival rate and recovery time of populations experiencing environmental disturbance, but limits on the ability of refuges to buffer communities are poorly understood. We hypothesized that importance of refuges in preventing population declines and alteration in community st ...
Thompson 2009 - Department of Biology
... evolutionary changes found in Darwin’s finches, some invasive plants and insects, and microbes in laboratory microcosms are in any way exceptions. We do not lack for examples of rapid evolution in nature, and we would have many more examples if more research programs incorporated the analysis of pot ...
... evolutionary changes found in Darwin’s finches, some invasive plants and insects, and microbes in laboratory microcosms are in any way exceptions. We do not lack for examples of rapid evolution in nature, and we would have many more examples if more research programs incorporated the analysis of pot ...
Feeding strategies in sympatric red howler monkeys (Alouatta
... habitats were rarely occupied by either species, this was not likely to impact the chisquared results. The greatest overlap between all three species was in levee habitats. This was the only habitat red howlers were observed feeding in (100%). Saddleback tamarins and squirrel monkeys both occupied l ...
... habitats were rarely occupied by either species, this was not likely to impact the chisquared results. The greatest overlap between all three species was in levee habitats. This was the only habitat red howlers were observed feeding in (100%). Saddleback tamarins and squirrel monkeys both occupied l ...
Journal Biology 2005 3 (1).pmd - Mongolian journal of Biological
... available rodent prey base to different extents. Little owls have previously been reported to take Meriones, Cricetulus and Dipodidae in middleeastern and Asian deserts (Obuch & Kristin, 2004). Marks & Yensen’s study in 1980 found that most of the prey of long-eared owls weighed between 10 and 60 g ...
... available rodent prey base to different extents. Little owls have previously been reported to take Meriones, Cricetulus and Dipodidae in middleeastern and Asian deserts (Obuch & Kristin, 2004). Marks & Yensen’s study in 1980 found that most of the prey of long-eared owls weighed between 10 and 60 g ...
Monsoon Vine Thickets Monsoon Vine Thickets
... Control weeds in your backyard and local area. More information about weeds and how to control them can be found at http://www.environskimberley.org.au/weeds.htm Don’t dump garden waste in the bush – this can spread more weeds and be a fire hazard. When camping in coastal areas, be careful not to sp ...
... Control weeds in your backyard and local area. More information about weeds and how to control them can be found at http://www.environskimberley.org.au/weeds.htm Don’t dump garden waste in the bush – this can spread more weeds and be a fire hazard. When camping in coastal areas, be careful not to sp ...
Potential value of indicator species for conservation
... Information gathered needs to be related to vegetation systems, as this is the level at which perception and management of the environment occurs. However, the great majority of terrestrial biodiversity occurs as insects, and so these must form a major part of any meaningful evaluation of biodiversi ...
... Information gathered needs to be related to vegetation systems, as this is the level at which perception and management of the environment occurs. However, the great majority of terrestrial biodiversity occurs as insects, and so these must form a major part of any meaningful evaluation of biodiversi ...
Non-random biodiversity loss underlies predictable increases in
... has been described for many different pathogens. Although the mechanisms causing this phenomenon remain unclear, the disassembly of communities to predictable subsets of species, which can be caused by changing climate, land use or invasive species, underlies one important hypothesis. In this case, ...
... has been described for many different pathogens. Although the mechanisms causing this phenomenon remain unclear, the disassembly of communities to predictable subsets of species, which can be caused by changing climate, land use or invasive species, underlies one important hypothesis. In this case, ...
Invasive plant species and competition for pollinators
... plants in patches suffering from different degree of rose invasion were observed and compared. The results show that the two plant species share pollinators, and that the degree of rose invasion in a patch could alter the species composition and foraging behaviours of pollinators visiting the native ...
... plants in patches suffering from different degree of rose invasion were observed and compared. The results show that the two plant species share pollinators, and that the degree of rose invasion in a patch could alter the species composition and foraging behaviours of pollinators visiting the native ...
The role of environmental generalist species in ecosystem function
... One way we can compare the performance of generalists and specialists is by using mathematical models to assess the ecosystem function of communities composed of various combinations of species types (e.g., Wilson et al., 2003). Ecosystem function is measured in a number of ways, including total bio ...
... One way we can compare the performance of generalists and specialists is by using mathematical models to assess the ecosystem function of communities composed of various combinations of species types (e.g., Wilson et al., 2003). Ecosystem function is measured in a number of ways, including total bio ...
- Wiley Online Library
... concluded that the trade-off may be a contributing factor to low elevation range limit development. However, our transplant experiments have also shown that the area outside the range can still be stressful even in years with above average precipitation (Siemens et al. 2012), suggesting that other s ...
... concluded that the trade-off may be a contributing factor to low elevation range limit development. However, our transplant experiments have also shown that the area outside the range can still be stressful even in years with above average precipitation (Siemens et al. 2012), suggesting that other s ...
Resource partitioning and overlap in three sympatric species of Ips
... Abstract. The bark beetles Ips pini, I. perroti and I. grandicollis are sympatric in pine forests of the north central United States. They share the same limited phloem resource and often coexist within the same host trees. We tested whether phloem resources are partitioned in time and space by meas ...
... Abstract. The bark beetles Ips pini, I. perroti and I. grandicollis are sympatric in pine forests of the north central United States. They share the same limited phloem resource and often coexist within the same host trees. We tested whether phloem resources are partitioned in time and space by meas ...
state of Britain's mammals a focus on invasive species
... have devoted ever more of our efforts and funds to work here in the UK, in particular on our beleaguered mammal species. We no longer have the megafauna that draws people to Africa and Asia, and as an island the diversity of our animals is substantially less than on the continent. This is why it’s e ...
... have devoted ever more of our efforts and funds to work here in the UK, in particular on our beleaguered mammal species. We no longer have the megafauna that draws people to Africa and Asia, and as an island the diversity of our animals is substantially less than on the continent. This is why it’s e ...
Protected species - The Woodland Trust
... fats for winter. Oak trees, Quercus sp., offer acorns, flowers and a variety of insects such as aphids and caterpillars. Hornbeam, Carpinus betulus, seeds and blackthorn fruit can also be good food sources, especially where hazel, Corylus avellana, is scarce. ...
... fats for winter. Oak trees, Quercus sp., offer acorns, flowers and a variety of insects such as aphids and caterpillars. Hornbeam, Carpinus betulus, seeds and blackthorn fruit can also be good food sources, especially where hazel, Corylus avellana, is scarce. ...