This factsheet talks about soil compaction and the four key points to prevent it: reduced or zero tillage, controlled traffic, permanent soil cover, rotations and cover crops.
FAO (2003): Soil Compaction: An unnecessary form of land degradation. Rome: Food and Agriculture Organization (FAO). [Accessed: 01.05.2012] PDFLibrary

In 1991, a training course on tillage and residue management in Africa was held in Nigeria to give participants the opportunity to discuss technologies of tillage practices in the various countries, update their knowledge on the subject and provide them with the basic principles on which to develop appropriate tillage and residue management packages for the specific soils in their countries. It was hoped that the course would give the participants a firm foundation and would stimulate the beginning of programmes for sustainable agricultural production. The background material from the course has been consolidated into this online publication, as it is felt that other readers may well benefit from the experiences presented at the training course.
FAO (1993): Soil tillage in Africa. Rome: Food and Agriculture Organization (FAO) URL [Accessed: 01.05.2012]
Tillage and manure application practices significantly impact surface and ground water quality in Iowa and other Midwestern states. An integrated system approach to manure and tillage management is critical to ensure efficient nutrient use and improvement of soil and water quality. This approach, however, requires changes in manure application technology and tillage system management to ensure the success of an integrated system.
ISU (2005): Tillage, Manure Management and Water Quality. Ames, Iowa: Iowa State University (ISU) URL [Accessed: 01.05.2012]This “State of Summary” booklet about the Bow River basin is a great example about a river system and its benefits. This booklet in particular and the WSOW (Web-based State of the Watershed) tool is intended to help water managers and users better understand the state of the Bow River watershed.
BOW RIVER BASIN COUNCIL (2010): Bow River Basin State of the Watershed Summary 2010. Calgary: Bow River Basin Council - Calgary Water Centre URL [Accessed: 30.04.2012] PDF
In this lecture, impacts of reservoir dams such as decreasing flow volumes in tail waters or barrier for animals are reviewed with some examples in Japanese and Asian rivers, particularly those on benthic animals and their habitat conditions in tail waters.
TAKEMON, Y. (2006): Ecological Impacts of Reservoir Dams on River Ecosystems in Tail Waters. Singapore: Asia Oceania Geosciences Society (AOGS) URL [Accessed: 30.04.2012]
This is an example – it is an extended file to provide information and guidance to applicants in the process of obtaining a water use permit from the Southwest Florida Water Management District.
SFWMD (2010): Water Use Permit Information Manual. Southwest Florida Water Management District (SFWMD) URL [Accessed: 30.04.2012]This document describes the three different classifications for rivers: youthful, mature, and old. Each type is described in terms of its characteristics, sediment transport, and river velocity, and terminology.
IMMOR, L. (2006): Classification Rivers – Three Stages of River Development. Geotech.com URL [Accessed: 30.04.2012] PDFThis publication is part of the “Flood Management Tools Series” compiled by the Associated Programme on Flood Management. The here-contained tool for “Reservoir Operations and Managed Flows” is based on available literature, and draws findings from relevant works wherever possible. This tool addresses the needs of practitioners and allows them to easily access relevant guidance materials. The tool is considered as a resource guide/material for practitioners and not an academic paper.
WMO ; GWP (2008): Reservoir Operations and Managed Flows. A Tool for Integrated Flood Management. Geneva and Stockholm: World Meteorological Organization (WMO) and Global Water Partnership (GWP) URL [Accessed: 30.04.2012] PDF
OTA (1983): Sustaining Tropical Forest Resources. Office of Technology Assessment (OTA) URL [Accessed: 27.04.2012]

This paper gives you an overview about the neem tree and its benefits.
HDRA (1998): The Neem Tree. Coventry: HDRA - The Organic Organisation URL [Accessed: 27.04.2012]