pastor - mathematical ecology of populations and ecosystems (blackwell, 2008)

... to handle. Mathematics provides a more precise way than the spoken word of think- ing and talking about the rates of change, nonlinearities, and feedbacks characteris- tic of populations and ecosystems. ... made of my colleagues Bruce Peckham and Harlan Stech of the Department of Mathematics and Statistics at the University of Minnesota Duluth and Yossi Cohen of...

Ngày tải lên: 03/04/2014, 12:02

... lower TSS-to-acidity ratio, and development of off-fl avors. Low TSS-to-acidity ratio results in a grapefruit with a tart and sour fl avor (Fellers 1991). In general, ascorbic acid content of grapefruit ... increased weight loss and soft- ening and discoloration of the peel and promoted peel pitting, scalding, and decay after 4 weeks of storage at 13°C (McGuire 1991). H...

Ngày tải lên: 03/04/2014, 12:11

... behaviour and ecology of Neanderthals and Modern Humans An understanding of the ecology of any species must include a knowledge of what it eats, where it finds it (and also water) and how it catches and ... behaviour and ecology 111 Species pineahaleppinastsylvestnigra Tree Density (Trees/ha) 200 180 160 140 120 100 80 60 40 MAX MIN MEAN 120 0-2 10 0-2 200 140 0-1...

Ngày tải lên: 01/11/2013, 07:20

... resources, but for the conservation of its biodiversity, and for the non-extractive uses made of the re- sources, such as diving, whale- or bird-watching and other forms of ecotourism. Overfishing—catching ... be the likely biological and economic impacts of con- tinuing current fishing trends? • What were the former states of these ecosystems before the ex- pansion of lar...

Ngày tải lên: 06/03/2014, 18:21

... as plants and by relying heavily on the concepts of plant ecology, we hope to provide a better understanding about this vegetation and therefore better manage- ment of the ecosystems so often invaded ... values and activities of people—farmers, foresters, land managers, and many other segments of human society. However, the abundance of weeds is often of more concern th...

Ngày tải lên: 16/03/2014, 04:20

... Although all of these systems were systems in the scien- tific sense, there were disparities in the quality of their implementation in terms of the professionalism and consistency of the court of hearing, ... development of Romanist German jurisprudence, particularly after the reception of Roman law. At the end of the fifteenth century, the opin- ions of the law professors w...

Ngày tải lên: 21/09/2012, 10:54

... Publishing Ltd, ISBN: 97 8-1 -4 05 1-5 47 8-9 BLUK139-Evans March 5, 2008 16:14 20 Frozen Food Science and Technology Recognition of the water content as the main determinant of the amount of heat required to ... 0 ◦ C. Because of the large values of c p and latent heat of water, the energy required for freezing and thawing of foods is large and it increases with...

Ngày tải lên: 03/04/2014, 12:01

... kg/m 2 /day and 13.335 kg/m 2 /day for fresh water at a distillate efficiency of 50.989% and 24.245% and overall thermal efficiency of 81.171% and 40.362% are found in the months of March and December ... 18.614 kg/m 2 /day and 9.791 kg/m 2 /day for brine solution at a distillate efficiency of 33.844% and 17.802% and overall thermal efficiency of 53.876% and 29...

Ngày tải lên: 05/09/2013, 16:11

... understand and compre- hend the strengths and limitations of various techniques and providing access to additional literature. An overview and synthesis of the current status of techniques and strategies ... our understanding of the aquatic environment and its response to disturbances. The book as a whole promotes the understanding of the struc- ture, function, and per...

Ngày tải lên: 06/03/2014, 18:21