The Ecological Survey of the Porter Valley (2001) offers an in-depth assessment of this vital natural area, reflecting FoPV’s commitment to conservation, preservation, and restoration. Authored by Oliver Gilbert, with invaluable assistance from Graham & Marilyn Band, Lindsey Berry, Heather Clarke, David Jordan, Shelagh McDonald, Christopher Nicholson, and Derek Whiteley, this survey provides a comprehensive overview of the valley’s diverse habitats. Enhanced by detailed line drawings from Heather Clarke, the report serves as an essential resource for community members and environmental professionals alike. It supports FoPV’s mission to bring life back into the Porter Valley through informed and sustainable ecological stewardship.

Ecological Survey of the Porter Valley (2001)

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Overview This document presents an ecological survey of Porter Valley, detailing its biodiversity, geology, and conservation needs.

Executive Summary

The report identifies and publicises the ecological capital of Porter Valley.

It highlights the valley's gradient from urban to rural over 3 miles.

The valley features a mix of designed landscapes and ancient woodlands.

Six disused dams contribute to the valley's ecological richness.

Wildlife includes species like grey squirrels, herons, and native freshwater crayfish.

An Action Plan is proposed to address threats to biodiversity and improve management.

Introduction

The survey was conducted by Friends of Porter Valley from 2000 to 2001.

It covers the valley's ecology, archaeology, and user experiences.

The valley is designated as Green Belt and an Area of High Landscape Value.

It is recognized as a Key City Site with potential for increased visitor engagement.

Geology

The valley is underlain by Carboniferous rocks, including Millstone Grit and Lower Coal Measures.

Geological features include sandstone and shale, with notable fossil assemblages.

The valley's geology influences its biodiversity and landscape features.

Biodiversity Habitats

The valley contains ancient woodlands, scrub, grasslands, wetlands, and road verges.

Ancient woodlands are at least 400 years old, supporting diverse flora.

Grasslands include amenity leys, permanent pastures, and species-rich areas.

Wet flushes and hedgerows contribute to the valley's ecological diversity.

Biodiversity Groups

Mammals: Includes species like water voles and badgers.

Birds: Notable species include kingfishers and dippers.

Insects: The valley supports various butterflies and moths.

Flora: The area is rich in flowering plants, ferns, and lower plants.

Site Evaluation

The valley's ecological capital is significant for local biodiversity and public enjoyment.

Certain features are under threat, necessitating conservation efforts.

Action Plan

Major repair work is needed for the six dams to prevent loss of open water.

A lottery grant will be sought for funding.

Woodland management requires immediate implementation due to neglect.

Monitoring of species-rich grasslands is essential to prevent deterioration.

Path network extensions are needed to reduce congestion and improve access.

Community involvement and education are key components of the action plan.

Amigos del valle de Porter

Ecological Survey of the Porter Valley (2001)

Summary