Skip to main content

9 Result(s)

within Dr. W. Richard J. Dean Remove this filter English Remove this filter

and

  1. Book Series

    Adaptations of Desert Organisms

    J. L. Cloudsley-Thompson, F. Punzo

  2. No Access

    Book

    Nomadic Desert Birds

    Dr. W. Richard J. Dean in Adaptations of Desert Organisms (2004)

  3. No Access

    Chapter

    Migrations and Movements of Desert Birds

    The mobility of birds is a key to their survival in desert environments (Evenari 1985; Brown 1986; Wiens 1991). Indeed, mobility is the key for survival of many organisms in arid ecosystems, including humans (...

    Dr. W. Richard J. Dean in Nomadic Desert Birds (2004)

  4. No Access

    Chapter

    Habitats and Densities of Nomadic Birds

    Some nomadic bird species are confined to particular arid zones, whereas other species are not restricted to arid ecosystems but occur widely in other grassland and shrubland ecosystems. This raises the questi...

    Dr. W. Richard J. Dean in Nomadic Desert Birds (2004)

  5. No Access

    Chapter

    Introduction

    There are two basic strategies for co** with life in the desert: (1) to be resident and sedentary and by behavioural or physiological tactics able to withstand extremes of heat and cold, lack of water and fl...

    Dr. W. Richard J. Dean in Nomadic Desert Birds (2004)

  6. No Access

    Chapter

    The Conservation of Nomadic Desert Birds

    Nomadic birds appear to be generally abundant wherever they occur. But are they? While it is true that none of the nomadic bird species in the world are classified as “threatened” or “endangered” in any of the...

    Dr. W. Richard J. Dean in Nomadic Desert Birds (2004)

  7. No Access

    Chapter

    Reproduction and Moult

    There are many constraints on reproduction for birds that are not resident or that migrate between fixed areas. Nomadic birds, often dependent on fairly short-lived resources, need to be adapted to being able ...

    Dr. W. Richard J. Dean in Nomadic Desert Birds (2004)

  8. No Access

    Chapter

    The Nomadic Avifauna

    Hyper-arid, arid and semi-arid ecosystems are characterised by low and unpredictable annual rainfall (Noy-Meir 1973), and by marked variability of all communities in time and space (Polis 1991). Resource peaks...

    Dr. W. Richard J. Dean in Nomadic Desert Birds (2004)

  9. No Access

    Chapter

    Food and Foraging

    Nomadic birds track resources that are, in the general sense, nomadic in time and space. Ephemeral plants in desert ecosystems that emerge, grow fast and produce large quantities of seeds after irregular rainf...

    Dr. W. Richard J. Dean in Nomadic Desert Birds (2004)