Bøger i Monographiae Biologicae serien

How many marine species are there in Costa Rica? Recent estimates of the numbers of species on coral reefs range from 1-9 million, so that the true number of marine species in Costa Rica is certainly far higher. Indeed the task of describing marine species is daunting - if there really are about 9 million marine species and Costa Rica has 3.

This volume merges all geographical and paleogeographical data on all groups of the arachnofauna. Furthermore, amongst other topics the volume also includes chapters on the systems of arachnida, fossil orders, dispersal and dispersion, endemics and relicts, regional arachnogeography, cave and high altitude arachnida.

Summarizes the morphological, morphogenetic, faunistic, and ecological data. This book provides a list of synonyms, a discussion of nomenclatural and taxonomic problems, and a morphological and ecological description, including faunistic records.

This book describes the outstanding features of the ecology and bio geography of the Indian region, comprising former British India, Nepal, Bhutan, Ceylon and Burma.

Maritime canals dissolve natural barriers to the dispersal of marine organisms, providing novel opportunities for natural dispersal, as well as for shipping-mediated transport. This book is the first to assess the impacts of the world's three principal maritime canals - the Kiel, the Panama, the Suez - as invasion corridors for alien biota.

The increasing world population is already causing intensive pressure on the most productive areas of the earth's surface. In this respect, the arid and semi-arid regions of the world, occupying about 11,000 million acres or 4,500 million hectares, roughly one third of the tota11and surface, pose a constant challenge to man's technological skill.

From single-celled organisms in Black Sea sand to endemic cave crustaceans, from mountain glacial relict insects to the most diverse bird fauna in Europe, the fauna of Bulgaria has been a subject of study for more than a century.

What have we learnt about the Nile since the mid-1970s, the moment when Julian Rzoska decided that the time had come to publish a comprehensive volume about the biology, and the geological and cultural history of that great river?

Proceedings of the conference held in Bandar Seri Begawan, April 1993

From single-celled organisms in Black Sea sand to endemic cave crustaceans, from mountain glacial relict insects to the most diverse bird fauna in Europe, the fauna of Bulgaria has been a subject of study for more than a century.

It functions as a window opening to all the aquatic scientists with a main focus on reservoirs in southern China and at the same time also covering several important, large reservoirs such as the Three Gorge Reservoir and Danjiangko Reservoir.

This, the fourth of six volumes that review the hypotrichs, a major group of the spirotrichs, covers the Gonostomatidae, the Kahliellidae, and a number of further taxa of unknown position in the hypotrichs. The book collates data from a vast array of sources.

This book is the third of six volumes that review the Hypotricha, a major group of the spirotrichous ciliates. It is about the Amphisiellidae, the Trachelostylidae, and some genera of unknown position in the Hypotricha.

An increasing variety of biological problems involving resource management, conservation and environmental quality have been dealt with using the principles of population biology (defined to include population dynamics, genetics and certain aspects of community ecology).

However, Por (1995) suggested that the area extending into Bolivia and Paraguay has not been satisfactorily 2 surveyed, leading him to accept the figure of 200,000 km as the area of the entire Pantanal, ineluding all of its extensions.

Since the limnological research on the man-made Brokopondo Reservoir in the 1960s, numerous data has been collected on the ecology of Surinam rivers and swamps. This book is a compilation of this data; it is a survey of the aquatic ecology of one of the peripheral areas of Amazonia.

These demonstrated a clear correspondence between the biological quality and fisheries of streams in the catchment and aspects of stream chemistry, par ticularly pH, aluminium and calcium on the one hand, and catchment land use on the other.

357 Temperature . . . . . . . . . 360 Salinity and conductivity 363 Major ions . . . . . . . . . Lake Victoria . Lake Kioga . . Lake Tana . . 390 The Sudan plain . 395 Limiting factors . . . . . . . . 396 Rates of photosynthetic production 397 References . . . . Epilogue by ]. Rzoska 403 Authors Index . 407 Subject Index .

With 'Biogeography and Ecology in South America' as the general theme, a total of twenty-nine contributions by thirty authors is offered here in two volumes, being volumes 18 and 19 of the Monographiae Biologicae.

Africa is not known as one of the more densely populated continents. Very few students of Africa have the opportunity - or the tenacity - to travel over these vast areas or into the hidden corners that lie beyond the well-known routes of Africa.

It is therefore necessary to give a detailed picture of the regional background and limnological features of the lake (Parts I and II) before describing its planktic and benthic com munities (Parts III and IV) and the Vertebrate fauna of the lake and its surroundings (Part V).

The valley of the River Wye has long been famed for its natural beauty and the salmon stocks which the river supports.

A large part of this book is dedicated to the geology of the Pityusic Archipelago, followed by contributions on climate and geography.