A guide to the common sea fishes of southern Africa by Rudy Van der Elst

By Rudy Van der Elst

Книга характеризует более чем three hundred видов рыб, которых можно наиболее часто увидеть либо поймать в прибрежных районах Южной Африки. Каждый раздел, посвященный определенному виду, включает детальное описание, полноцветную фотографию, заметки по образу жизни, включая многие малоизвестные и интересные аспекты поведения, карты локального распространения и встречаемости в мире, наиболее современные ограничения в отношения ловли. Книга будет полезна всем, кто интересуется рыбами и рыбалкой.
Доп. информация: Файл является рипом с сайта Google Books. Этим определяется отсутствие некоторых страниц (до 20% от общего числа) и невысокое разрешение сканирования (около a hundred dpi).

Образцы страниц

Мои раздачи биологических определителей, справочников, учебных пособий и монографийБудьте добры, нажмите на кнопку Сказать "Спасибо"!

Show description

Read Online or Download A guide to the common sea fishes of southern Africa PDF

Similar zoology books

Crap Taxidermy

A funny examine what occurs while taxidermy is going extraordinarily incorrect, through the founding father of the hit site crappytaxidermy. com.

A comfy toad having fun with a smoke and a brew. A cat with eerily versatile entrance legs. A smiling lion with receding gums. no matter if you opt to giggle or balk at those spectacularly undesirable makes an attempt at taxidermy, you won't be capable of tear your eyes clear of the curiosities inside of. This quantity brings jointly the superior of the worst (along with a DIY "Stuff your personal Mouse" lesson by way of an Insect Preparator from the yank Museum of typical History), showcasing the main perverse but creative anatomical reconstructions of the animal country you'll ever see.

Animal Communication Networks

Summarizing study growth and clients within the swiftly increasing sector of animal conversation networks, this booklet differs from different works on animal conversation since it covers numerous animal teams and kinds of sign. It additionally highlights study on the interface with different disciplines (for instance, psychology and body structure) and is meant for researchers within the box, complex scholars and high-level undergraduates.

101 Things You Don't Know About Science and No One Else Does Either

James Trefil takes the reader on an exhilarating travel around the borders of present medical knowledge-from astronomy to genetics, from details expertise to cosmology, the good contested questions that preoccupy researchers at the present time and may turn into headlines day after today. In stylish, witty three-page summations, Dr.

Allgemeine Zoologie: Bau und Funktion tierischer Organismen

Ein wallisisches Sprichwort sagt: "Der Mensch, der keine Fehler macht, macht auch nichts Gescheites. " In einer solchen Lage befindet sich heute der Autor eines wissenschaftlichen Buches. Es ist unmoglich, nach dem Prinzip einer Enzyklopiidie moglichst umfassend zu berich ten. Immer mug eine gezielte Auswahl getroffen werden, die natiirlich Anlag zur Kritik gibt.

Additional info for A guide to the common sea fishes of southern Africa

Sample text

H. Campbell*) Studyarea Caithness (1) Sutherland (2) Sutherland Moray E Perth Lanark S. 73 '*RSPB study areas were selected on the basis of anticipated high total wader populations. Provided that suitable crags or trees are availablefor nesting, raptors such as Golden Eagle, Peregrine, Buzzard and Kestrel, and scavengers such as Raven and Carrion/Hooded Crow, willhunt or forage over both heather and grassymoorlands. For most of these species the available food supply exceeds demand, but in some areas a decrease in sheep carrion, resulting from afforestation and improved sheep management, has already caused a serious decline in Raven numbers.

These changes seriously affected Loch Leven's famous trout fishery for a fewyears, and also caused a marked drop in the Mute and Whooper Swan populations. Better effluent treatment and the development of slow-release nitrogenous fertilisers have since improved the condition of the loch, but swan numbers have not returned to their former levels. Similar nutrient-enrichment is occurring in most lowland lochs set amidst farmland, though generally on a less dramatic scale. For some species, notably Shoveler, enrichment may be beneficial, since it increases the crop of small invertebrates feeding on the algae in the surface water, but in the long-term it may render a water unsuitable for predominantly vegetarian species.

Most of those surviving would be difficult or prohibitively expensive (even with modern techniques) to bring into cultivation which is a good thing from the conservationist's point of view. There are few large freshwater reedbeds in Scotland, and none of the species dependent upon reedbeds in other parts of Britain - Reed Warbler, Bearded Tit, Marsh Harrier and Bittern - breeds here regularly. Nevertheless many lowland lochs have considerable adjoining areas of reed-dominated fen and these are the main habitat of Reed Bunting and Sedge Warbler and are also valuable for Teal, Snipe and Water Rail, and as autumn roosts for species such as Sand Martin, Sedge Warbler, Pied Wagtail and Starling.

Download PDF sample

Rated 4.11 of 5 – based on 36 votes