penguins - Cloudfront.net
... • The penguin species with the highest population is the Macaroni penguin with 11,654,000 pairs. The species with the lowest population is the endangered Galapagos penguin with between 6,000-15,000 Penguins. ...
... • The penguin species with the highest population is the Macaroni penguin with 11,654,000 pairs. The species with the lowest population is the endangered Galapagos penguin with between 6,000-15,000 Penguins. ...
Contingent fire effects on granivore removal of exotic woody plant
... one of the largest recently burned blocks. All plots were separated by at least 115 m, a distance larger than the average home range of the most common small vertebrate seed predator, P. leucopus (32 m radius) (Lackey et al. 1985). We did not establish controls in unburned sites because such sites n ...
... one of the largest recently burned blocks. All plots were separated by at least 115 m, a distance larger than the average home range of the most common small vertebrate seed predator, P. leucopus (32 m radius) (Lackey et al. 1985). We did not establish controls in unburned sites because such sites n ...
THE JAMAICAN IGUANA (CYCLURA COLLEI): A R EPORT ON 25
... local and international scientific and conservation communities. This was perhaps unsurprising. Locally, Jamaica lacked a resident herpetologist, and lizards are generally loathed by most Jamaicans. Furthermore, no environmental lobby or environmental NGO existed at the time in Jamaica, and efforts ...
... local and international scientific and conservation communities. This was perhaps unsurprising. Locally, Jamaica lacked a resident herpetologist, and lizards are generally loathed by most Jamaicans. Furthermore, no environmental lobby or environmental NGO existed at the time in Jamaica, and efforts ...
Ursus thibetanus Asiatic Black Bear Vulnerable
... Habitat loss due to logging, expansion of human settlements, roadway networks, and hydro-power stations, combined with hunting for skins, paws and especially gall bladders are the main threats to this species. Habitat loss and degradation is most severe in the southern portion of the range. In India ...
... Habitat loss due to logging, expansion of human settlements, roadway networks, and hydro-power stations, combined with hunting for skins, paws and especially gall bladders are the main threats to this species. Habitat loss and degradation is most severe in the southern portion of the range. In India ...
Species Selection: Theory and Data
... level of the traits that confer those differences. Effect-macroevolution then signifies differential rates governed by organism-level—that is, aggregate—traits, whereas strict-sense species selection refers only to differential rates that are governed by emergent, heritable properties at the species ...
... level of the traits that confer those differences. Effect-macroevolution then signifies differential rates governed by organism-level—that is, aggregate—traits, whereas strict-sense species selection refers only to differential rates that are governed by emergent, heritable properties at the species ...
Oulanka Research Station, FINLAND September 8th – 11th, 2014
... Predicting responses of aquatic species and communities to climate change is a key scientific challenge. By linking species attributes to dominant environmental drivers that vary across the landscape, a traits-based approach can be used to help explain current variation in species abundance and loca ...
... Predicting responses of aquatic species and communities to climate change is a key scientific challenge. By linking species attributes to dominant environmental drivers that vary across the landscape, a traits-based approach can be used to help explain current variation in species abundance and loca ...
Deer herbivory affects the functional diversity of forest floor plants via
... frequently expressed (Takatsuki 2009), and these concerns even extend to areas with pristine vegetation that have been designated as protected areas. In Shiretoko National Park (located on the northeastern tip of Hokkaido, Japan), deer overabundance has resulted in numerous ecological issues, includ ...
... frequently expressed (Takatsuki 2009), and these concerns even extend to areas with pristine vegetation that have been designated as protected areas. In Shiretoko National Park (located on the northeastern tip of Hokkaido, Japan), deer overabundance has resulted in numerous ecological issues, includ ...
Warmwater Streams
... strongly influence the distribution and abundance of prey fishes (Power et al. 1985), and introduced flathead catfish can suppress native fish assemblage biomass through predation (Pine et al. 2007). Competition is the joint utilization of a limited resource by multiple species that reduces the fitn ...
... strongly influence the distribution and abundance of prey fishes (Power et al. 1985), and introduced flathead catfish can suppress native fish assemblage biomass through predation (Pine et al. 2007). Competition is the joint utilization of a limited resource by multiple species that reduces the fitn ...
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... firetree and banana poka had spread rapidly into extensive, mostly intact areas of the Park (Warshauer et al. 1982; Whiteaker and Gardner 1985). As the biocontrol program developed, it became clear that effective biocontrol agents might not be found or that irreversible ecological damage might occur ...
... firetree and banana poka had spread rapidly into extensive, mostly intact areas of the Park (Warshauer et al. 1982; Whiteaker and Gardner 1985). As the biocontrol program developed, it became clear that effective biocontrol agents might not be found or that irreversible ecological damage might occur ...
Flammulated Owl (Otus flammeolus)
... The Flammulated Owl requires mature coniferous forests with a mosaic of largediameter veteran trees, clumps of dense regenerating younger trees, and small patches of shrubby grassland. Forests used by the species in Canada are dominated by Douglas-fir, usually with a significant component of large P ...
... The Flammulated Owl requires mature coniferous forests with a mosaic of largediameter veteran trees, clumps of dense regenerating younger trees, and small patches of shrubby grassland. Forests used by the species in Canada are dominated by Douglas-fir, usually with a significant component of large P ...
Deleting species from model food webs
... Dept of Theoretical Physics, Univ. of Manchester, Manchester, M13 9PL, UK. ...
... Dept of Theoretical Physics, Univ. of Manchester, Manchester, M13 9PL, UK. ...
Notes on the ecology of Tradescantia fluminensis and a biological
... extensive ecological research shows that T. fluminensis alters litter decomposition, nutrient cycling, the successional trajectory amongst plant species, and invertebrate biodiversity in New Zealand lowland podocarp-broadleaved forests, and probably adversely affects the integrity of native ecosyste ...
... extensive ecological research shows that T. fluminensis alters litter decomposition, nutrient cycling, the successional trajectory amongst plant species, and invertebrate biodiversity in New Zealand lowland podocarp-broadleaved forests, and probably adversely affects the integrity of native ecosyste ...
Hedgerow management and wildlife review
... For example, whilst psyllids are more abundant on untrimmed hedges, springtails and thrips respond positively to regular cutting. Increased trimming frequencies probably stimulate shoot and leaf production and increase leaf area per square metre of hedge face – benefiting herbivorous invertebrate sp ...
... For example, whilst psyllids are more abundant on untrimmed hedges, springtails and thrips respond positively to regular cutting. Increased trimming frequencies probably stimulate shoot and leaf production and increase leaf area per square metre of hedge face – benefiting herbivorous invertebrate sp ...
Paleo to present day water studies
... and abrasives (diatoms used to be in our toothpaste!). There is currently research for using diatoms as renewable energy sources of electricity and car fuel. Diatoms can even be used to create microscopic art! Human activity can impact diatoms; we can decrease, increase or change their growth by add ...
... and abrasives (diatoms used to be in our toothpaste!). There is currently research for using diatoms as renewable energy sources of electricity and car fuel. Diatoms can even be used to create microscopic art! Human activity can impact diatoms; we can decrease, increase or change their growth by add ...
View or download introduction
... number of threatened, endangered, and extinct species, but also the state with the highest proportion of endemic flora and fauna (Ziegler 2002). Non-native mammals – primarily rats, cats, mongoose, goats, sheep, and pigs – have had devastating impacts on listed and at-risk species and are major fact ...
... number of threatened, endangered, and extinct species, but also the state with the highest proportion of endemic flora and fauna (Ziegler 2002). Non-native mammals – primarily rats, cats, mongoose, goats, sheep, and pigs – have had devastating impacts on listed and at-risk species and are major fact ...
Case Studies II
... • Wolves are social animals, usually grouped in packs, which consist of a set of behaviourally dominant parents (the s), their offspring of the last few years, and other non-breeding adults, which have been accepted into the pack, but are unrelated. • Bond between paired dominant animals may be for ...
... • Wolves are social animals, usually grouped in packs, which consist of a set of behaviourally dominant parents (the s), their offspring of the last few years, and other non-breeding adults, which have been accepted into the pack, but are unrelated. • Bond between paired dominant animals may be for ...
Criteria for Categorizing Invasive Non
... developed by The Nature Conservancy and NatureServe (formerly the Association for Biodiversity Information) in cooperation with the National Park Service and the Plant Conservation Initiative’s Alien Plant Working Group (Randall et al. 2003). The Criteria Development Committee, comprising representa ...
... developed by The Nature Conservancy and NatureServe (formerly the Association for Biodiversity Information) in cooperation with the National Park Service and the Plant Conservation Initiative’s Alien Plant Working Group (Randall et al. 2003). The Criteria Development Committee, comprising representa ...
Species name (Species name)
... Western gray squirrels compete against a large number of other native species for food and den sites, including the scrub jay (Aphelocoma coerulescens) and Steller’s jay (Cyanocitta stelleri, Verts and Carraway 1995), Lewis woodpecker (Melanerpes lewis; Cross 1969, Foster 1992), acorn woodpeckers ...
... Western gray squirrels compete against a large number of other native species for food and den sites, including the scrub jay (Aphelocoma coerulescens) and Steller’s jay (Cyanocitta stelleri, Verts and Carraway 1995), Lewis woodpecker (Melanerpes lewis; Cross 1969, Foster 1992), acorn woodpeckers ...
Plants and insects in early oldfield succession
... Plant couer and species richness Differences in temporal patterns of change in cover at the two sites was evident in the first season (Table 1). I n May of the first year at the Iowa site, the cover was only 10% and reflected the fact that plants were exclusively seedlings, most of which were still ...
... Plant couer and species richness Differences in temporal patterns of change in cover at the two sites was evident in the first season (Table 1). I n May of the first year at the Iowa site, the cover was only 10% and reflected the fact that plants were exclusively seedlings, most of which were still ...
Coevolution: A synergy in biology and ecology
... following briefly describes some research methodology of coevolution. (1) Make a long-term observation to some of the traits possibly caused by coevolution between species to investigate the relationship between genetic variation, for example, Pimentel’s study on housefly-parasitoid relationship, an ...
... following briefly describes some research methodology of coevolution. (1) Make a long-term observation to some of the traits possibly caused by coevolution between species to investigate the relationship between genetic variation, for example, Pimentel’s study on housefly-parasitoid relationship, an ...
IUCN Guidelines for the Prevention of
... homeowners unwittingly introduce alien plants into wilderness and natural areas; pests and pathogens of crops, livestock and forests reduce yields and increase control costs. The discharge of ballast water together with hull fouling has led to unplanned and unwanted introductions of harmful aquatic ...
... homeowners unwittingly introduce alien plants into wilderness and natural areas; pests and pathogens of crops, livestock and forests reduce yields and increase control costs. The discharge of ballast water together with hull fouling has led to unplanned and unwanted introductions of harmful aquatic ...
Introducing non-trophic interactions in food webs
... What are the dynamical consequences of integrating these interactions at the scale of the system? ...
... What are the dynamical consequences of integrating these interactions at the scale of the system? ...
Locally rare species influence grassland ecosystem
... or a particular study site (but see [11]). In order to understand the response of natural and semi-natural ecosystems to ongoing global change, we therefore need to examine the relationships between different components of diversity (above- versus below-ground, common versus rare) and ecosystem mult ...
... or a particular study site (but see [11]). In order to understand the response of natural and semi-natural ecosystems to ongoing global change, we therefore need to examine the relationships between different components of diversity (above- versus below-ground, common versus rare) and ecosystem mult ...
Post-Tour Classroom Activities
... say that soil only becomes dirt when we find it in places we don’t think it belongs, such as on our clothes or in our homes. Soil as Habitat Maker One convenient definition of habitat is: There area in which a plant or animal normally lives. This definition also implies the importance of habitats be ...
... say that soil only becomes dirt when we find it in places we don’t think it belongs, such as on our clothes or in our homes. Soil as Habitat Maker One convenient definition of habitat is: There area in which a plant or animal normally lives. This definition also implies the importance of habitats be ...
Locally rare species influence grassland ecosystem multifunctionality
... or a particular study site (but see [11]). In order to understand the response of natural and semi-natural ecosystems to ongoing global change, we therefore need to examine the relationships between different components of diversity (above- versus below-ground, common versus rare) and ecosystem mult ...
... or a particular study site (but see [11]). In order to understand the response of natural and semi-natural ecosystems to ongoing global change, we therefore need to examine the relationships between different components of diversity (above- versus below-ground, common versus rare) and ecosystem mult ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.