Update on the Environmental and Economic Costs
... 0921-8009/$ - see front matter D 2004 Elsevier B.V. All rights reserved. doi:10.1016/j.ecolecon.2004.10.002 ...
... 0921-8009/$ - see front matter D 2004 Elsevier B.V. All rights reserved. doi:10.1016/j.ecolecon.2004.10.002 ...
Update on the environmental and economic costs associated with
... 0921-8009/$ - see front matter D 2004 Elsevier B.V. All rights reserved. doi:10.1016/j.ecolecon.2004.10.002 ...
... 0921-8009/$ - see front matter D 2004 Elsevier B.V. All rights reserved. doi:10.1016/j.ecolecon.2004.10.002 ...
BIODIVERSITY AND HAZARDS MANAGEMENT
... species to each other. It can be measured by counting the number of different taxa (the main categories of classification) present. For example, a pond containing three species of snails and two fish, is more diverse than a pond containing five species of snails, even though they both contain the sa ...
... species to each other. It can be measured by counting the number of different taxa (the main categories of classification) present. For example, a pond containing three species of snails and two fish, is more diverse than a pond containing five species of snails, even though they both contain the sa ...
as a PDF
... interaction parameters, respectively. The average target density is the value consistent with allowing all species to take on their zero growth target densities. Our approximation assumes that all parameters are independently distributed. Under these definitions, some target densities take on negati ...
... interaction parameters, respectively. The average target density is the value consistent with allowing all species to take on their zero growth target densities. Our approximation assumes that all parameters are independently distributed. Under these definitions, some target densities take on negati ...
Species evenness and invasion resistance of
... warrants more attention for a number of reasons. Experimental studies manipulating species richness typically impose high levels of initial species evenness (Schwartz et al. 2000), but natural plant communities often exhibit low evenness (Weiher and Keddy 1999). Furthermore, relative abundances of s ...
... warrants more attention for a number of reasons. Experimental studies manipulating species richness typically impose high levels of initial species evenness (Schwartz et al. 2000), but natural plant communities often exhibit low evenness (Weiher and Keddy 1999). Furthermore, relative abundances of s ...
Human-modified ecosystems and future evolution
... of their birds in the last 3,000 years, largely because of human colonization and overkill (11). By the 20th century 40 to 50% of the world’s land surface had been visibly transformed for domestic production and settlement (12). As we enter the 21st century, the earth’s atmosphere, waters, and soils ...
... of their birds in the last 3,000 years, largely because of human colonization and overkill (11). By the 20th century 40 to 50% of the world’s land surface had been visibly transformed for domestic production and settlement (12). As we enter the 21st century, the earth’s atmosphere, waters, and soils ...
Round 2 for Butterflies - Conserve Wildlife Foundation
... native range. Although I have no experience with this species, it appears likely that it was introduced and is not native to NJ. The comments above give evidence that it’s non-native. I haven’t seen anyone state evidence (e.g., historic occurrence) that it is native. In his 1881 Fishes of PA, Cope ...
... native range. Although I have no experience with this species, it appears likely that it was introduced and is not native to NJ. The comments above give evidence that it’s non-native. I haven’t seen anyone state evidence (e.g., historic occurrence) that it is native. In his 1881 Fishes of PA, Cope ...
Revision Pack 4 File
... Aphids are a major pest of cereal crops, causing an estimated £120m worth of damage to cereal crops per year in the UK alone. The Rothamsted scientists say that the new wheat variety could lead to increased crop yield and reduced use of insecticides, which are costly to apply and environmentally dam ...
... Aphids are a major pest of cereal crops, causing an estimated £120m worth of damage to cereal crops per year in the UK alone. The Rothamsted scientists say that the new wheat variety could lead to increased crop yield and reduced use of insecticides, which are costly to apply and environmentally dam ...
Full article
... greater amount of algal than animal food. Therefore, the results also suggest that both algal and animal food were not only edible but at least similarly palatable for the three species, even for C. granosus, which consumed nearly twice as much food as F. limbata and F. picta. The variable levels of ...
... greater amount of algal than animal food. Therefore, the results also suggest that both algal and animal food were not only edible but at least similarly palatable for the three species, even for C. granosus, which consumed nearly twice as much food as F. limbata and F. picta. The variable levels of ...
9 tcp/rer/3402/ra/arthu - Assistance to Western Balkan Countries for
... Overlaps with and complements actions to prevent the ...
... Overlaps with and complements actions to prevent the ...
Biodiversity Notes
... that is native to a particular place and that is found only there. • Ecologists often use the numbers of endemic species of plants as an indicator of overall biodiversity because plants form the basis of ecosystems on land. ...
... that is native to a particular place and that is found only there. • Ecologists often use the numbers of endemic species of plants as an indicator of overall biodiversity because plants form the basis of ecosystems on land. ...
Title: A new idea on the evolution of biodiversity
... Charles Darwin (1) and, at the same time, by Alfred R. Wallace (2). The understanding of the mechanisms that allow the origin of species and explain their current presence on planet Earth has shed light on many processes such as speciation, adaptation and extinction. In the following decades many hy ...
... Charles Darwin (1) and, at the same time, by Alfred R. Wallace (2). The understanding of the mechanisms that allow the origin of species and explain their current presence on planet Earth has shed light on many processes such as speciation, adaptation and extinction. In the following decades many hy ...
Intraguild predation and successful invasion by introduced ladybird
... of a community of ladybird beetles found in eastern Washington State. We examine interactions between two native species (Coccinella transversoguttata Brown and Hippodamia convergens Guérin-Méneville), a well-established exotic species (C. septempunctata), and a second exotic that has just begun inv ...
... of a community of ladybird beetles found in eastern Washington State. We examine interactions between two native species (Coccinella transversoguttata Brown and Hippodamia convergens Guérin-Méneville), a well-established exotic species (C. septempunctata), and a second exotic that has just begun inv ...
Katie`s lecture slides
... that were far apart became more similar over time. Environmental filtering (elevation as proxy): study plots with a large elevation differences became less similar over time ...
... that were far apart became more similar over time. Environmental filtering (elevation as proxy): study plots with a large elevation differences became less similar over time ...
Common skink - Department of Conservation
... Common skinks reach sexual maturity when they are about four years old, and have on average 5-6 young each year. Individuals that have a larger body size (length) tend to have more young than smaller bodied individuals. Females are slightly larger than males. The most common food of common skinks is ...
... Common skinks reach sexual maturity when they are about four years old, and have on average 5-6 young each year. Individuals that have a larger body size (length) tend to have more young than smaller bodied individuals. Females are slightly larger than males. The most common food of common skinks is ...
What Is Conservation Biology? Michael E. Soulé BioScience
... cal a n d historical ones o r t o brevail over adabtive. deterministic infrequent catastrophic events, such forces within pobulations. The stoas inundation, volcanism, and glacia- chastic factors in population extinction. In other words, ecological pro- tion have been discussed extensively cesses b ...
... cal a n d historical ones o r t o brevail over adabtive. deterministic infrequent catastrophic events, such forces within pobulations. The stoas inundation, volcanism, and glacia- chastic factors in population extinction. In other words, ecological pro- tion have been discussed extensively cesses b ...
NOBANIS - Marine invasive species in Nordic waters
... legs, which in A. tonsa is elongate with several spinules about half way to the tip, whereas A. bifilosa has a swollen base and fine spinules along the distal half (Redeke, 1934). However, it is very difficult to distinguish the species of Acartia, and so far no molecular method has been ...
... legs, which in A. tonsa is elongate with several spinules about half way to the tip, whereas A. bifilosa has a swollen base and fine spinules along the distal half (Redeke, 1934). However, it is very difficult to distinguish the species of Acartia, and so far no molecular method has been ...
Plant-animal pollination interaction networks in Australia
... such Apis mellifera (Popic et al, in prep) and are rich in native bees which dominate plant-pollinator networks. Sampling these communities in conjunction with invaded communties, allows us to investigate the impacts on pollinator networks by exotics such as Apis mellifera. Determining the type and ...
... such Apis mellifera (Popic et al, in prep) and are rich in native bees which dominate plant-pollinator networks. Sampling these communities in conjunction with invaded communties, allows us to investigate the impacts on pollinator networks by exotics such as Apis mellifera. Determining the type and ...
Community assembly and invasion: An experimental Joseph Fargione* , Cynthia S. Brown
... competitors for nitrogen on these low-nitrogen soils (25) and are the most abundant functional guild in nearby native grasslands. Their ability to strongly competitively inhibit all invaders is a likely explanation for their high abundance. However, because they most strongly inhibit establishment a ...
... competitors for nitrogen on these low-nitrogen soils (25) and are the most abundant functional guild in nearby native grasslands. Their ability to strongly competitively inhibit all invaders is a likely explanation for their high abundance. However, because they most strongly inhibit establishment a ...
Ecology Objective Sheet
... Define “trophic levels”. Distinguish between producers and consumers. List and distinguish four types of consumers. Distinguish among scavengers, detritus feeders, and decomposers. Distinguish between photosynthesizers and chemosynthesizers, aerobic respiration and anaerobic respiration. Be able to ...
... Define “trophic levels”. Distinguish between producers and consumers. List and distinguish four types of consumers. Distinguish among scavengers, detritus feeders, and decomposers. Distinguish between photosynthesizers and chemosynthesizers, aerobic respiration and anaerobic respiration. Be able to ...
Partitioning of space and food resources by three fish of the genus
... voluntary or the digestion of plant material is low (Joubert & Hanekom 1980), Diplodus species ingest a considerable amount of algae when foraging on benthic communities (Sala 1996). Algal communities show marked zonation patterns in the Mediterranean (Feldmann 1937, Ballesteros 1992), and each comm ...
... voluntary or the digestion of plant material is low (Joubert & Hanekom 1980), Diplodus species ingest a considerable amount of algae when foraging on benthic communities (Sala 1996). Algal communities show marked zonation patterns in the Mediterranean (Feldmann 1937, Ballesteros 1992), and each comm ...
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.