In nature there exist three main types of biotic interactions between individuals of different species: competition, predation, and mutualism. All three exert powerful selection pressures, and all three shape communities. However, the question of how important interspecific competition in nature really is remains controversial and unresolved. This book provides a critical and exhaustive review of the topic. Although the examples are limited mostly to birds (interspecific competition and community structure have been exhaustively studied in this animal group, and a lot of experimental data are available), the conclusions reached have a far broader relevance to population ecologists in general. The book reasons that the coexistence of species is the result of both past and presently on-going interspecific competition. Furthermore, understanding the importance of interspecific competition in natural systems will be increasingly important when modelling the effects of climate change on populations.
Join Mercer Mayer's classic and beloved character, Little Critter, in this brand-new My First I Can Read storybook! Little Critter discovers a lost baby bird in his backyard, and he and his family all pitch in to take care of it until it can fly on its own. Little Critter's love and patience is rewarded when he gets a special springtime surprise!
Author Nikki Moustaki certainly cannot resist the splendid lovebird, and her valentine to this irresistible avian wonder is the subject of this Complete Care Made Easy pet guide. This colorful guide offers vital information to both new and experienced bird keepers about this hookbilled parrot, covering all aspects of selecting, caring for, and maintaining well-behaved happy pet birds.
This new book presents state-of-the-art for treating groundwater contaminated with Petroleum Hydrocarbons, based on CDM's vast experience in treating contaminated groundwater using air stripping, GAC and biorestoration. Design issues and pitfalls to avoid when implementing treatment technologies are explained. Capital costs, operation and maintenance costs, unit costs are presented. Groundwater Remediation and Petroleum is the most comprehensive examination of these technologies and the implications of recent UST regulations. It provides hands-on information in the form of detailed step-by-step design procedures and case studies.
Learned From A Hummingbird: Lessons In Faith follows the author through two years of daunting challenges that seemed to come one after another. The hummingbird that she held briefly before it flew away became her symbol of rising to face each difficulty by acknowledging the Grace of God, asking for and accepting His help. "Many experiences ended in negative results. I had to learn to forgive - to let go and let God. Then Good came, usually in small amounts, but I was thankful for every manifestation of God's abundance." Katharine Grant-Fox has been a career teacher in Elementary Education, Music Education and Special Education in both public and private schools, and served on the Music Faculties of two of California's universitieis. She is the author of PROSPERITY IS YOURS.
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