Ecology dissertations

Sixty-seven smallholder farmers were interviewed in Gauteng Province by using a Ecological characterisation and effects of fire and grazing on Cyrtanthus nutans R. Literature references suggest that no recent ecological research has been The mineral endowment on the African continent is estimated to be the first or second

Ecology dissertations

Mane colour varies and darkens with age; research shows its colour and size are influenced by environmental factors such as average ambient temperature. Mane length apparently signals fighting success in male—male relationships; darker-maned individuals may have longer reproductive lives and higher offspring survival, although they suffer in the hottest months of the year.

Ecology dissertations

The presence, absence, colour and size of the mane are associated with genetic precondition, sexual maturity, climate and testosterone production; the rule of thumb is that a darker, fuller mane indicates a healthier animal.

In Serengeti National Parkfemale lions favour males with dense, dark manes as mates. The hormone testosterone has been linked to mane growth; castrated lions often have little to no mane because the removal of the gonads inhibits testosterone production. In the Chauvet Cave is a sketchy drawing of two maneless lions that appearing to be walking side-by-side.

One lion is mostly obscured by the other; the obscuring lion is larger than the obscured one and is depicted with a scrotum. White lion White lions owe their colouring to a recessive allele The white lion is a rare morph with a genetic condition called leucism that is caused by a double recessive allele.

It is not albino; it has normal pigmentation in the eyes and skin. They were removed from the wild in the s, thus decreasing the white lion gene pool.

Nevertheless, 17 births have been recorded in five prides between and Intermittent bursts of activity continue until dawn, when hunting most often takes place. Such a group is called a " pride ". Groups of male lions are called "coalitions". Large prides, consisting of up to 30 individuals, have been observed.

A lion may switch lifestyles; nomads can become residents and vice versa. Females lions stay closer to their natal pride. Therefore, female lions in an area are more closely related to each other than male lions in the same area. The reasons for the development of sociality in lionesses — the most pronounced in any cat species — are the subject of much debate.

Increased hunting success appears to be an obvious reason, but this is uncertain upon examination; coordinated hunting allows for more successful predation but also ensures non-hunting members reduce per capita calorific intake.

Some females, however, take a role raising cubs that may be left alone for extended periods. Members of the pride tend to regularly play the same role in hunts and hone their skills. The health of the hunters is the primary need for the survival of the pride; hunters are the first to consume the prey at the site it is taken.

Asiatic lion prides differ from African prides in group composition.

Ecology dissertations

Male Asiatic lions are solitary or associate with up to three males, forming a loose pride. Pairs of males rest and feed together, and display marking behaviour at the same sites.

Females associate with up to 12 other females, forming a stronger pride together with their cubs.Open Access Theses and Dissertations. Advanced research and scholarship.

Theses and dissertations, free to find, free to use. Searches Fondren's Catalog | Online Articles | Databases | Digital Scholarship Archive | Woodson Archives | Research Guides | Fondren's Website Search.

The vegetation supported by the Witteberg and Dwyka Groups south of Worcester is a diverse mosaic of fynbos-, renosterveld- and succulent karoo vegetation units sustained by a winter-rainfall pattern.

News Senior Lecturer Elizabeth Co Wins Metcalf Award for Excellence in Teaching. May 16, Dr. Elizabeth Co has been chosen as one of two winners. Ecology and Evolutionary Biology Dissertations and Theses. Browse by Search within this collection: Go Recent Submissions.

The Coreidae of Kansas  Deay, Howard Owen (University of Kansas, ) The life history and biology of two parasites of. Home. Join the Terrapin Working Group. Objectives. Governance and By-laws. Officers and Regional Representatives. Bibliography. Workshops and Meetings.

Regional Initiatives and Updates.

How to.. Choose A Dissertation Topic (and get published)