BIODIVERSITY IN AGROECOSYSTEMS - CHAPTER 16 (end) doc

... Technologies Conserving, Maintaining, and Using Biodiversity Minimizing Chemical Inputs International Collaboration in Biotechnology Research Findings Anticipating Adaptive Challenges for Developing Countries Seminar ... Problems Introducing Agroecosystems and Indicators of Quality Defining Agroecosystems Factors Affecting Quality Indicators Quality Indicators — Linking Biodiversity...

Ngày tải lên: 11/08/2014, 17:20

... Orchesella cincta. The lethal concentration (LC 50 ) for atrazine was estimated at 224 µg/g atrazine in food. Mortality and molting frequency increased with increasing concentrations of atrazine. The ... role in faunal-induced mineralization of microbial carbon and nitrogen (van Veen and Kuikman, 1990). Carbon and nitrogen mineralization is generally faster in coarse than in fine-textu...

Ngày tải lên: 11/08/2014, 17:20

... Nicholls CONTENTS Introduction The Nature and Function of Biodiversity in Agroecosystems Patterns of Insect Biodiversity in Agroecosystems Plant Biodiversity and Insect Stability in Agroecosystems Patterns ... FUNCTION OF BIODIVERSITY IN AGROECOSYSTEMS Biodiversity refers to all species of plants, animals, and microorganisms existing and interacting within an ecosyst...

Ngày tải lên: 11/08/2014, 17:20

... Medium-Term Plan 199 8-2 000, ICRAF, Nairobi, Kenya. Ingram, J., 1990. The role of trees in maintaining and improving soil productivity — a review of the literature, in Agroforestry for Sustainable ... since in addition to their biodiversity these multistrata damar agroforests in Sumatra are financially attractive. Damar resins are utilized by industries in Indonesia or exported...

Ngày tải lên: 11/08/2014, 17:20

... 1987). Breeding in western North America during the boreal summer, Swainson’s hawks migrate to the nonbreeding grounds in South America with the advancing austral summer, maintaining both climatic ... made illegal in Argentina. An ecotoxicology program was initiated, with field and labo- ratory training for government agents, students, and veterinarians living in the Figure 2 Swainson’...

Ngày tải lên: 11/08/2014, 17:20

... Group, LLC 220 Integrated Assessment of Health and Sustainability of Agroecosystems © 2009 by Taylor & Francis Group, LLC 212 Integrated Assessment of Health and Sustainability of Agroecosystems © ... Group, LLC 214 Integrated Assessment of Health and Sustainability of Agroecosystems © 2009 by Taylor & Francis Group, LLC 206 Integrated Assessment of Health and Sustainability of...

Ngày tải lên: 18/06/2014, 19:20

... cleaning residual sites of contamination, in large part associated with contaminated sediments. In general, the initial phase of remediation involves controlling contam- inant disposal into the ... artificially altering the physical or chem- ical environment, and physically removing in- place sources of contaminants. Contaminants may enter a system through both point and nonpoint sources....

Ngày tải lên: 11/08/2014, 13:21

... processes (Tilman, 1996), maintaining and increasing protozoan biodiversity will contribute to more sustainable agriculture. Ecofarming and organic fertilizer management enhance pro- tozoan activity. Protozoa ... through burrowing move- ments and passing ingested cysts through guts, providing new hot spots and releasing greater quantities of nutrients, which have led to increased plant yiel...

Ngày tải lên: 11/08/2014, 17:20

... beneficials. Today, high-yielding, high-quality, insect-, disease-, and weed-free monocultures require high-energy inputs to produce and harvest. With production costs escalating, interest in enduring and efficient ... Insects and Their Value Biodiversity Crisis Biodiversity in Farmland Biodiversity Monitoring Key Beneficials in Agroecosystems Intraspecific Diversity of Beneficials...

Ngày tải lên: 11/08/2014, 17:20

... especially in the rain-fed mixed farming systems of the developing world that will provide an incentive for investment in long-term soil fertility improvements, such as the use of inorganic fertilizers ... grazing system to an intensively managed industrial system. McIntire et al. (1992) have documented the role population pressure has in integrating crop and animal agriculture and in...

Ngày tải lên: 11/08/2014, 17:20