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Wild rodents were collected using live snap traps in pistachio gardens of Kerman Province, Southeast Iran from 2007 to 2009, then some physiological parameters of them were measured. The samples were identified as follow: Nesokia indica, Meriones persicus, Meriones lybicus and Tatera indica. Blood samples were obtained from the heart, then the blood parameters (glucose, cholesterol, triglyceride, total protein, HDL, red and white blood cell number) in wild species of rodents and laboratory rat were compared. The results showed that there were no significant differences in serum glucose, triglyceride, HDL and total protein levels among different experimental groups. The concentration of cholesterol in T. indica was more than that in N. indica (P < 0.01). The total numbers of red blood cells also showed significant difference between wild garden rodent species and laboratory rat (P < 0.01), while the numbers of white blood cells showed no significant difference. 相似文献
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Biodiversity goals are becoming increasingly important in stream restoration. Typical models of stream restoration are based
on the assumption that if habitat is restored then species will return and ecological processes will re-establish. However,
a range of constraints at different scales can affect restoration success. Much of the research in stream restoration ecology
has focused on habitat constraints, namely the in-stream and riparian conditions required to restore biota. Dispersal constraints
are also integral to determining the timescales, trajectory and potential endpoints of a restored ecosystem. Dispersal is
both a means of organism recolonization of restored sites and a vital ecological process that maintains viable populations.
We review knowledge of dispersal pathways and explore the factors influencing stream invertebrate dispersal. From empirical
and modeling studies of restoration in warm-temperate zones of New Zealand, we make predictions about the timescales of stream
ecological restoration under differing levels of dispersal constraints. This process of constraints identification and timescale
prediction is proposed as a practical step for resource managers to prioritize and appropriately monitor restoration sites
and highlights that in some instances, natural recolonization and achievement of biodiversity goals may not occur. 相似文献
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A Rapid Method to Score Stream Reaches Based on the Overall Performance of Their Main Ecological Functions 总被引:1,自引:1,他引:0
David K. Rowe Stephanie Parkyn John Quinn Kevin Collier Chris Hatton Michael K. Joy John Maxted Stephen Moore 《Environmental management》2009,43(6):1287-1300
A method was developed to score the ecological condition of first- to third-order stream reaches in the Auckland region of
New Zealand based on the performance of their key ecological functions. Such a method is required by consultants and resource
managers to quantify the reduction in ecological condition of a modified stream reach relative to its unmodified state. This
is a fundamental precursor for the determination of fair environmental compensation for achieving no-net-loss in overall stream
ecological value. Field testing and subsequent use of the method indicated that it provides a useful measure of ecological
condition related to the performance of stream ecological functions. It is relatively simple to apply compared to a full ecological
study, is quick to use, and allows identification of the degree of impairment of each of the key ecological functions. The
scoring system was designed so that future improvements in the measurement of stream functions can be incorporated into it.
Although the methodology was specifically designed for Auckland streams, the principles can be readily adapted to other regions
and stream types. 相似文献
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