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Plant nitrogen-use strategy as a driver of
... autotrophic ammonia oxidisers are less obvious. If the rhizosphere does affect the AO community, it may be linked to partitioning of soil inorganic N between them. To fulfil their N requirements, plants uptake the protonated form of ammonia, ammonium (NH4 + ), which dominates in acidic soils, free a ...
... autotrophic ammonia oxidisers are less obvious. If the rhizosphere does affect the AO community, it may be linked to partitioning of soil inorganic N between them. To fulfil their N requirements, plants uptake the protonated form of ammonia, ammonium (NH4 + ), which dominates in acidic soils, free a ...
symbiosis in eco-industrial park: lessons on planning a symbiotic city
... occurring therein. In contrast to a natural ecosystem, a mechanical system is not selfsustainable and is regulated externally by humans. Nor is the mechanical system obliged to adapt or respond to changes in the surrounding ecosystem. McManus and Gibbs (2008), also point to the disjunction related t ...
... occurring therein. In contrast to a natural ecosystem, a mechanical system is not selfsustainable and is regulated externally by humans. Nor is the mechanical system obliged to adapt or respond to changes in the surrounding ecosystem. McManus and Gibbs (2008), also point to the disjunction related t ...
Soils and the Environment
... A and E make up the Zone of Leaching. B Enriched in clay, Fe oxides, Silica, carbonate and other material leached from above. This is the Zone of Accumulation. C Partially altered (weathered) parent material, which is either rock or loose sediment. R Unweathered (unaltered) parent material = rock. S ...
... A and E make up the Zone of Leaching. B Enriched in clay, Fe oxides, Silica, carbonate and other material leached from above. This is the Zone of Accumulation. C Partially altered (weathered) parent material, which is either rock or loose sediment. R Unweathered (unaltered) parent material = rock. S ...
Advances in understanding Arctic Alaska soils and their soil organic
... Global Change Initiative and soil parameters for climate change models. The detailed and specific studies of SOC stocks under the ARCSS-LAII program have indicated that arctic soils likely contain twice as much of the terrestrial C pool as previously reported. This newly accounted for SOC is of sign ...
... Global Change Initiative and soil parameters for climate change models. The detailed and specific studies of SOC stocks under the ARCSS-LAII program have indicated that arctic soils likely contain twice as much of the terrestrial C pool as previously reported. This newly accounted for SOC is of sign ...
Humus Information Sheet - oly-wa.us
... Chemically, humus consists of certain constituents of the original plant material resistant to further decomposition; of substances undergoing decomposition; of complexes resulting from decomposition either by processes of hydrolysis or by oxidation and reduction; and of various compounds synthesize ...
... Chemically, humus consists of certain constituents of the original plant material resistant to further decomposition; of substances undergoing decomposition; of complexes resulting from decomposition either by processes of hydrolysis or by oxidation and reduction; and of various compounds synthesize ...
Abstract
... way to dispose it is a ground spreading at orchards and unpaved roads. It is known that the OMW is characterized by high chemical and biochemical oxygen demands and contains many different components such as phenolic compounds, ppolysaccharides, lipids and others. Therefore, its land application may ...
... way to dispose it is a ground spreading at orchards and unpaved roads. It is known that the OMW is characterized by high chemical and biochemical oxygen demands and contains many different components such as phenolic compounds, ppolysaccharides, lipids and others. Therefore, its land application may ...
When are alternative stable states more likely to occur?
... to exhibit alternative stable states than competitivelystructured systems. They consider that we raise the following rationale as a causal sequence: (1) ‘‘the trait complexes of species living in environments with strong underlying abiotic gradients or disturbance regimes all tend to be more similar ...
... to exhibit alternative stable states than competitivelystructured systems. They consider that we raise the following rationale as a causal sequence: (1) ‘‘the trait complexes of species living in environments with strong underlying abiotic gradients or disturbance regimes all tend to be more similar ...
Fens and floodplains of the temperate zone
... (2003) wrote: “Few estimates of loss and current extent exist, but where estimates are available, they indicate extensive loss, fragmentation, and degradation”. Changes in the status Direct conversion Probably the most important factor affecting fens and floodplains is their conversion into agricultu ...
... (2003) wrote: “Few estimates of loss and current extent exist, but where estimates are available, they indicate extensive loss, fragmentation, and degradation”. Changes in the status Direct conversion Probably the most important factor affecting fens and floodplains is their conversion into agricultu ...
Semester 1 Exam Review Sheet
... I can outline the threats to wetlands and their ecosystem services. I can outline the threats to the world’s rivers and other freshwater systems. I can define the National Wild and Scenic Rivers Act. I can identify the purpose of the water cycle in the replenishment of water as a resource. I can lis ...
... I can outline the threats to wetlands and their ecosystem services. I can outline the threats to the world’s rivers and other freshwater systems. I can define the National Wild and Scenic Rivers Act. I can identify the purpose of the water cycle in the replenishment of water as a resource. I can lis ...
Multiple diversity–stability mechanisms enhance population and
... tions and communities will simultaneously be stabilized with increasing richness because with these mechanisms community attributes become more stable through the reduction of the average variability of populations through different means (Table 1). The effects of biodiversity on the stability of po ...
... tions and communities will simultaneously be stabilized with increasing richness because with these mechanisms community attributes become more stable through the reduction of the average variability of populations through different means (Table 1). The effects of biodiversity on the stability of po ...
Positive Plant Diversity-Soil Stability Relationships are
... cular mycorrhizal fungi (AMF) may be a mechanism for increasing sequestration of carbon (Rillig, 2004; Rillig et al., 2007; Wilson et al., 2009). The interspecific functional dissimilarity may be another mechanism through which below-ground biodiversity drives soil processes (Heemsbergen et al., 200 ...
... cular mycorrhizal fungi (AMF) may be a mechanism for increasing sequestration of carbon (Rillig, 2004; Rillig et al., 2007; Wilson et al., 2009). The interspecific functional dissimilarity may be another mechanism through which below-ground biodiversity drives soil processes (Heemsbergen et al., 200 ...
SudingMS_final_1007_RYS
... then outline a research agenda to further advance applications of this trait-based scaling ...
... then outline a research agenda to further advance applications of this trait-based scaling ...
The Role of Macroinvertebrates in Stream Ecosystem Function
... indirectly influence localized hydraulic characteristics, zones of stationary water (transient storage), and nutrient cycling ( 1 10, 126). Several studies have also shown that grazing snails (92, 125) and insects (37) increase amounts of downstream export of FPOM from grazed surfaces, as well as th ...
... indirectly influence localized hydraulic characteristics, zones of stationary water (transient storage), and nutrient cycling ( 1 10, 126). Several studies have also shown that grazing snails (92, 125) and insects (37) increase amounts of downstream export of FPOM from grazed surfaces, as well as th ...
the scrutiny of some soil degradation indicators in dry farming and
... According to Table 1, there is no significant difference statistically between the values of apparent soil bulk density in different land uses. Hajabbassi et al. (2007) showed that soil structure disturbance as a result of tillage had decreased the organic content of the soil, leading to an increase ...
... According to Table 1, there is no significant difference statistically between the values of apparent soil bulk density in different land uses. Hajabbassi et al. (2007) showed that soil structure disturbance as a result of tillage had decreased the organic content of the soil, leading to an increase ...
Biological Stoichiometry: A Chemical Bridge between Ecosystem
... feed back to alter the selective regime. The work just reviewed has occurred mainly in the field of freshwater plankton ecology but has also seen increasing application in freshwater benthic ecology (Frost et al. 2002) and, as will be discussed below, is expanding into terrestrial ecology as well. T ...
... feed back to alter the selective regime. The work just reviewed has occurred mainly in the field of freshwater plankton ecology but has also seen increasing application in freshwater benthic ecology (Frost et al. 2002) and, as will be discussed below, is expanding into terrestrial ecology as well. T ...
Carcasses provide resources not exclusively to scavengers: patterns
... of carrion exploitation by passerine birds. Ecosphere 4(8):105. http://dx.doi.org/10.1890/ES13-00108.1 ...
... of carrion exploitation by passerine birds. Ecosphere 4(8):105. http://dx.doi.org/10.1890/ES13-00108.1 ...
Erosion and Deposition - Grants Pass School District 7
... Chapter 9 – Erosion and Deposition • Waves shape the coast through erosion by breaking down rock and transporting sand and other sediment which can wear away rock by abrasion when it hits the shore. – Some rock on shore is harder than the rock around it and wears away slower. This forms a headland ...
... Chapter 9 – Erosion and Deposition • Waves shape the coast through erosion by breaking down rock and transporting sand and other sediment which can wear away rock by abrasion when it hits the shore. – Some rock on shore is harder than the rock around it and wears away slower. This forms a headland ...
View PDF - OMICS International
... varied effects on the abundance of other species in field experiments [14] and suggest which additional species that it may be necessary to eliminate in order to prevent extinction cascades resulting from the initial loss [15]. The theoretical and mathematical framework for these studies has been su ...
... varied effects on the abundance of other species in field experiments [14] and suggest which additional species that it may be necessary to eliminate in order to prevent extinction cascades resulting from the initial loss [15]. The theoretical and mathematical framework for these studies has been su ...
Are planthopper problems caused by a breakdown in ecosystem
... The ecological fitness of the pest species increases due to “release from natural enemies” (Southwood and Comins 1976). Ecological fitness of secondary pests is further enhanced if the crops are enriched with high nitrogen applications (Lu et al 2004). In a computer simulation study, when N inputs w ...
... The ecological fitness of the pest species increases due to “release from natural enemies” (Southwood and Comins 1976). Ecological fitness of secondary pests is further enhanced if the crops are enriched with high nitrogen applications (Lu et al 2004). In a computer simulation study, when N inputs w ...
Consequences of warming on tundra carbon balance determined by
... litter and soil C decomposition4,5 . Previous studies have shown that reindeer grazing has the potential to mitigate the effects of climate warming on vegetation by suppressing the growth of deciduous shrubs that otherwise benefit from climate warming6,7 . Short-term grazer exclosure and warming stu ...
... litter and soil C decomposition4,5 . Previous studies have shown that reindeer grazing has the potential to mitigate the effects of climate warming on vegetation by suppressing the growth of deciduous shrubs that otherwise benefit from climate warming6,7 . Short-term grazer exclosure and warming stu ...
full-text pdf - phylodiversity.net
... important than the relative difference in k between different plant groups within the same study (i.e. derived with the same method over the same time scale). We assembled 36 published studies (56% direct measurement, 44% chronosequence studies; Table 1, Appendix S1 in Supporting information), which ...
... important than the relative difference in k between different plant groups within the same study (i.e. derived with the same method over the same time scale). We assembled 36 published studies (56% direct measurement, 44% chronosequence studies; Table 1, Appendix S1 in Supporting information), which ...
Soil Composition
... Soil Conservation In order to stop more soil from being damaged, humans must limit these damaging activities. We can renew already damaged soil by methods known as soil conservation. However, these methods can take a long time to repair the damage. Reforestation is a method of repairing damaged are ...
... Soil Conservation In order to stop more soil from being damaged, humans must limit these damaging activities. We can renew already damaged soil by methods known as soil conservation. However, these methods can take a long time to repair the damage. Reforestation is a method of repairing damaged are ...
Document
... First, the contemporary marine and freshwater faunas are more ecesis compatible than are faunas not contemporary. ...
... First, the contemporary marine and freshwater faunas are more ecesis compatible than are faunas not contemporary. ...
Effects of shading on relative competitive
... Most pairwise inter-specific competition is asymmetric, where one species reduces the performance of another and may (or may not) increase its own performance. In natural communities, plant species can be ranked in a competitive hierarchy (an ordered ranking from competitive dominant to competitive ...
... Most pairwise inter-specific competition is asymmetric, where one species reduces the performance of another and may (or may not) increase its own performance. In natural communities, plant species can be ranked in a competitive hierarchy (an ordered ranking from competitive dominant to competitive ...
Human impact on the nitrogen cycle
Human impact on the nitrogen cycle is diverse. Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation. As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over the past century. Global atmospheric nitrous oxide (N2O) mole fractions have increased from a pre-industrial value of ~270 nmol/mol to ~319 nmol/mol in 2005. Human activities account for over one-third of N2O emissions, most of which are due to the agricultural sector. This article is intended to give a brief review of the history of anthropogenic N inputs, and reported impacts of nitrogen inputs on selected terrestrial and aquatic ecosystems.