Riparian zones - Environment Canterbury
... Pollution control Some land use activities such as the harvesting of forest, the application of pesticides or fertiliser and the unmanaged ranging of domestic stock in riparian zones can reduce water quality for downstream users. Ungrazed, well planted riparian zones act as ‘filters’ which settle o ...
... Pollution control Some land use activities such as the harvesting of forest, the application of pesticides or fertiliser and the unmanaged ranging of domestic stock in riparian zones can reduce water quality for downstream users. Ungrazed, well planted riparian zones act as ‘filters’ which settle o ...
Ecological effects and distribution of invasive non - IPNA-CSIC
... been worse than that of the latter. Rattus norvegicus has terrestrial habits and has been considered in other islands to be responsible for the rarefaction and frequent local extinction of land- and seabirds (Møller, 1983; Moors, 1985; Courchamp et al., 2003). However, R. rattus exhibits more arbore ...
... been worse than that of the latter. Rattus norvegicus has terrestrial habits and has been considered in other islands to be responsible for the rarefaction and frequent local extinction of land- and seabirds (Møller, 1983; Moors, 1985; Courchamp et al., 2003). However, R. rattus exhibits more arbore ...
49 Butterfly diversity of Uplanv nature camp, Kalaburagi district
... and the functional aspects of the specie that provide goods and services for human well-being (Wilson, 1997) [1]. The study of biological diversity encompasses both the intrinsic and anthropocentric values associated with it. Arthropada classification is still in a state of flux, and may always rema ...
... and the functional aspects of the specie that provide goods and services for human well-being (Wilson, 1997) [1]. The study of biological diversity encompasses both the intrinsic and anthropocentric values associated with it. Arthropada classification is still in a state of flux, and may always rema ...
Insects and the city: what island biogeography tells us about insect
... forest habitats were conducted in North American and in central and northern European cities that grew into agricultural and forested landscapes. By contrast, a study conducted in a Mediterranean context, where most of the species that composed the “original” insect fauna were probably associated mo ...
... forest habitats were conducted in North American and in central and northern European cities that grew into agricultural and forested landscapes. By contrast, a study conducted in a Mediterranean context, where most of the species that composed the “original” insect fauna were probably associated mo ...
A Record of Small-Clawed Otters
... fields artificially irrigated from the Bendungan Anai dam. This dam irrigates 13,640 hectares of rice fields in four sub-districts: Lubuk Alung, Sintuk Toboh Gadang, Batang Anai, and Ulakan Tapakis. The otter survey used a line transect method by following rice field banks and irrigation channels (A ...
... fields artificially irrigated from the Bendungan Anai dam. This dam irrigates 13,640 hectares of rice fields in four sub-districts: Lubuk Alung, Sintuk Toboh Gadang, Batang Anai, and Ulakan Tapakis. The otter survey used a line transect method by following rice field banks and irrigation channels (A ...
Natural Grasslands - Northern Tablelands Local Land Services
... Many other ecological communities have a grassy understorey, with many species in common with Natural Grasslands on Alluvial Plains. These include Weeping Myall, Coolibah – Black Box Woodland and Box-Gum Grassy Woodland, which are also threatened ecological communities. These communities, and other ...
... Many other ecological communities have a grassy understorey, with many species in common with Natural Grasslands on Alluvial Plains. These include Weeping Myall, Coolibah – Black Box Woodland and Box-Gum Grassy Woodland, which are also threatened ecological communities. These communities, and other ...
Invasions: the trail behind, the path ahead, and a test
... widely celebrated, and acclimatization societies were busy ‘enriching’ the flora and fauna in many regions world-wide. Some of the more notable achievements of acclimatization societies include introducing starlings and house sparrows to the United States (in an attempt to introduce all the birds men ...
... widely celebrated, and acclimatization societies were busy ‘enriching’ the flora and fauna in many regions world-wide. Some of the more notable achievements of acclimatization societies include introducing starlings and house sparrows to the United States (in an attempt to introduce all the birds men ...
Fresh water - Norsk institutt for naturforskning
... previous 10 years10. Likewise, 1/3 of the ponds investigated in the nearby county of Østfold were in danger of being destroyed12. In Østfold alone, 80 % of the ponds and other similar water bodies depicted on maps from 1790 had disappeared between 1950 and 1990. Moreover, since 1960, more than 1500 ...
... previous 10 years10. Likewise, 1/3 of the ponds investigated in the nearby county of Østfold were in danger of being destroyed12. In Østfold alone, 80 % of the ponds and other similar water bodies depicted on maps from 1790 had disappeared between 1950 and 1990. Moreover, since 1960, more than 1500 ...
Bruun_Oikos2006 - Research Portal
... Community-level birth rate and local species richness We propose that the rate at which new individuals recruit from sexually produced propagules and reach reproductive maturity is a key property of biological communities. That is what we call the community-level birth rate (new genets per establish ...
... Community-level birth rate and local species richness We propose that the rate at which new individuals recruit from sexually produced propagules and reach reproductive maturity is a key property of biological communities. That is what we call the community-level birth rate (new genets per establish ...
Grassland Biomes - Films On Demand
... ● Understand the physical processes that shape the patterns of Earth’s surface. ● Understand how to analyze the spatial organization of people, places, and environments on Earth’s surface. ● Understand how physical systems affect human systems. ● Understand how human actions modify the physical envi ...
... ● Understand the physical processes that shape the patterns of Earth’s surface. ● Understand how to analyze the spatial organization of people, places, and environments on Earth’s surface. ● Understand how physical systems affect human systems. ● Understand how human actions modify the physical envi ...
Ecological Kinds and Ecological Laws
... behavior does quite a bit better. I suggest that more often than not, important ecological processes – including, but not limited to, competition – correlate better with functional properties than with historical ones. This pattern, if widespread, might partly explain why some ecologists in the 1970 ...
... behavior does quite a bit better. I suggest that more often than not, important ecological processes – including, but not limited to, competition – correlate better with functional properties than with historical ones. This pattern, if widespread, might partly explain why some ecologists in the 1970 ...
PDF - David Suzuki Foundation
... Abstract. Decline of the Northern Spotted Owl (Strix occidentalis caurina) has drawn attention to the management of oldgrowth and late-successional forest habitat in the Canadian Pacific Northwest. Here we expand this focus to include 138 additional species of vertebrates and vascular plants that ar ...
... Abstract. Decline of the Northern Spotted Owl (Strix occidentalis caurina) has drawn attention to the management of oldgrowth and late-successional forest habitat in the Canadian Pacific Northwest. Here we expand this focus to include 138 additional species of vertebrates and vascular plants that ar ...
Interactive comment on “Disruption of metal ion homeostasis in soils
... P11, L2-4). The PCA analysis also clearly indicates a strong correlation among most of the measured soil variables. I am furthermore skeptical of how the reported RDA models were performed. According to Table 2, 94.5% of the variation in forb richness is explained through the model. To me, this see ...
... P11, L2-4). The PCA analysis also clearly indicates a strong correlation among most of the measured soil variables. I am furthermore skeptical of how the reported RDA models were performed. According to Table 2, 94.5% of the variation in forb richness is explained through the model. To me, this see ...
DOC file - City of Fort Collins Public Records
... moderated by elevation, natural disturbance processes and/or underlying abiotic factors and gradients such as bedrock geology and hydrology. Native plant communities at Bobcat Ridge Natural Area occur within five ecosystems as shown in Figure 3.1 and Table 3.1. There is one wetland ecosystem: Lower ...
... moderated by elevation, natural disturbance processes and/or underlying abiotic factors and gradients such as bedrock geology and hydrology. Native plant communities at Bobcat Ridge Natural Area occur within five ecosystems as shown in Figure 3.1 and Table 3.1. There is one wetland ecosystem: Lower ...
2009oecologia
... inXuence invasion by non-indigenous species may be partly explained by the evolutionary relationship of these invaders with natives. Darwin’s naturalization hypothesis controversially proposes that non-native plants are more likely to invade if they lack close relatives in their new range. A possibl ...
... inXuence invasion by non-indigenous species may be partly explained by the evolutionary relationship of these invaders with natives. Darwin’s naturalization hypothesis controversially proposes that non-native plants are more likely to invade if they lack close relatives in their new range. A possibl ...
Edge effects of long-term glades on the invertebrate abundance and
... colonisation, allowing net recruitment into the grassland. Herbivory allows the spread of less palatable species by selectively removing the more palatable ones, thus reducing interplant competition. The higher plant survival of the less palatable species makes them well-suited for further encroachm ...
... colonisation, allowing net recruitment into the grassland. Herbivory allows the spread of less palatable species by selectively removing the more palatable ones, thus reducing interplant competition. The higher plant survival of the less palatable species makes them well-suited for further encroachm ...
Review from Reports of the National Center for Science Education
... so on), the human impact on their populations, IUCN conservation status (least concern, threatened, or endangered), and then usually a wonderfully engaging fulfillment of the book’s titular promise, an explanation of “what it means.” Chapter 5 has one of the best available descriptions, for its leng ...
... so on), the human impact on their populations, IUCN conservation status (least concern, threatened, or endangered), and then usually a wonderfully engaging fulfillment of the book’s titular promise, an explanation of “what it means.” Chapter 5 has one of the best available descriptions, for its leng ...
The Bottom Line: Impacts of Alien Plant Invasions in Protected Areas
... Indeed, in a survey of 93 terrestrial PAs in 22 tropical countries, protected areas were shown to be effective in halting problems such as land clearing, logging, hunting, unplanned fires and overgrazing (Bruner et al. 2001); unfortunately impacts of invasive alien species were not included in the s ...
... Indeed, in a survey of 93 terrestrial PAs in 22 tropical countries, protected areas were shown to be effective in halting problems such as land clearing, logging, hunting, unplanned fires and overgrazing (Bruner et al. 2001); unfortunately impacts of invasive alien species were not included in the s ...
Historical changes in northeastern US bee
... have been focused on the bumble bee genus, Bombus. Some Bombus species are declining sharply in North America (7–9) and elsewhere (10, 11), although others remain numerous (7) or are expanding their ranges (10). Furthermore, Bombus may not be representative of the world’s 442 other bee genera becaus ...
... have been focused on the bumble bee genus, Bombus. Some Bombus species are declining sharply in North America (7–9) and elsewhere (10, 11), although others remain numerous (7) or are expanding their ranges (10). Furthermore, Bombus may not be representative of the world’s 442 other bee genera becaus ...
Unit 3 Environmental Science: Energy
... vegetation leave a series of fragments of intact habitat. If the pockets of remnant vegetation are isolated and too small to support viable populations of species, or if the fragments are not connected, the impact can be significant. ...
... vegetation leave a series of fragments of intact habitat. If the pockets of remnant vegetation are isolated and too small to support viable populations of species, or if the fragments are not connected, the impact can be significant. ...
the occurrence, impact and management of feral cats and black rats
... average, be expected to live for 2.6 years after initial capture before being killed by a cat, a relatively short span for what would normally be a relatively long-lived animal (Greer 1989). In a study (prior to the arrival of cane toads) in the Kapalga area of Kakadu, predation by feral cats was th ...
... average, be expected to live for 2.6 years after initial capture before being killed by a cat, a relatively short span for what would normally be a relatively long-lived animal (Greer 1989). In a study (prior to the arrival of cane toads) in the Kapalga area of Kakadu, predation by feral cats was th ...
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... like that. For example, wall lettuce, which is a very well and truly considered British native plant, essentially a calcareous ancient woodland indicator in many places, in London, has got a real taste for Georgian terraces, and it often grows in the street wells and places like that. So, you can of ...
... like that. For example, wall lettuce, which is a very well and truly considered British native plant, essentially a calcareous ancient woodland indicator in many places, in London, has got a real taste for Georgian terraces, and it often grows in the street wells and places like that. So, you can of ...
cheatgrass Bromus tectorum L.
... Distribution and Abundance Cheatgrass is largely a weed of grazed areas and croplands, especially winter wheat and alfalfa. Native and current distribution: Cheatgrass is native to the Mediterranean region and Eurasia. It has spread throughout Europe, Southern Russia, western central Asia, North Ame ...
... Distribution and Abundance Cheatgrass is largely a weed of grazed areas and croplands, especially winter wheat and alfalfa. Native and current distribution: Cheatgrass is native to the Mediterranean region and Eurasia. It has spread throughout Europe, Southern Russia, western central Asia, North Ame ...
Wildlife Conservation
... Any species that is introduced into a country or habitat from which it does not originate is an alien species. The impact of these species varies greatly as they could impact upon food webs, the diversity of species or even influence the genetic diversity of a species if they can interbreed. Some sp ...
... Any species that is introduced into a country or habitat from which it does not originate is an alien species. The impact of these species varies greatly as they could impact upon food webs, the diversity of species or even influence the genetic diversity of a species if they can interbreed. Some sp ...
MACROALGAL ABUNDANCE IN INTERTIDAL ZONE OF
... Sarangan beach has high biodiversity of macroalgae. Macroalgae has an important role as primary producer for herbivorous marine animals, potentially as biomonitoring, and pollutant bioremediation. As benthic organisms, macroalgae grows attached rocky or reef substrate in intertidal zone. These resea ...
... Sarangan beach has high biodiversity of macroalgae. Macroalgae has an important role as primary producer for herbivorous marine animals, potentially as biomonitoring, and pollutant bioremediation. As benthic organisms, macroalgae grows attached rocky or reef substrate in intertidal zone. These resea ...
Introduced species
An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.