Zobrazeno 1 - 10
of 33
pro vyhledávání: '"H. G. Robertson"'
Publikováno v:
African Entomology. 16:253-262
Conservation of South Africa's butterflies is critically dependent on knowledge of their ecology. Many endangered species are in the family Lycaenidae and have a more-or-less obligate relationship with a particular species of ant. An ecosystem capabl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e454511f0cbba38256a100ffbd4484d2
https://doi.org/10.4001/1021-3589-16.2.253
https://doi.org/10.4001/1021-3589-16.2.253
Autor:
Adriaan van Niekerk, Steven L. Chown, H. P. Davids, H. G. Robertson, A. Botes, Melodie A. McGeoch
Publikováno v:
Journal of Biogeography. 33:71-90
Aim Climate-modelling exercises have demonstrated that the Cape Floristic Region is highly sensitive to climate change and will apparently lose much of its northern limits over the next few decades. Because there is little monitoring of diversity in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1459cc807d4451dc92df56c2e63e186
https://doi.org/10.1111/j.1365-2699.2005.01336.x
https://doi.org/10.1111/j.1365-2699.2005.01336.x
Publikováno v:
ResearcherID
Ant communities have been widely used as indicators of minesite rehabilitation in Australia and are beginning to play a similar role in other parts of the world. Here we examine ant communities on rehabilitated ash dams associated with a coal-fired p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6942af00677ce3793929ee27a1d894c1
https://doi.org/10.1111/j.1061-2971.2004.00421.x
https://doi.org/10.1111/j.1061-2971.2004.00421.x
Publikováno v:
Journal of Chemical Ecology. 29:2721-2727
A comparative analysis of the venom alkaloids of 13 species of ants in the genus Monomorium collected in Africa was undertaken. Ants were collected in Kenya and South Africa. Most species produced 2,5-dialkylpyrrolidines and some of their analogous 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::889b2d10b7fa7e3efc56dbe36e7c5074
https://doi.org/10.1023/b:joec.0000008015.42254.c3
https://doi.org/10.1023/b:joec.0000008015.42254.c3
Autor:
H. G. Robertson
Publikováno v:
Biodiversity and Conservation. 11:1637-1652
Ants were extracted in Winkler bags from sifted leaf litter sampled in arange of forest and woodland types in and around Mkomazi Game Reserve innorth-eastern Tanzania, including the Eastern Arc Mountains of South Pare andWest Usambara. A total of 87
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddd14c2023a65aab63dd767cd119c9ef
https://doi.org/10.1023/a:1016883901065
https://doi.org/10.1023/a:1016883901065
Autor:
H. G. Robertson, Brian L. Fisher
Publikováno v:
Insectes Sociaux. 46:78-83
In montane fynbos in South Africa Melissotarsus emeryi Forel was found nesting in live wood of Leucospermum praemorsum (Meisn.) E. Phillips, in association with armor-scale insects (Diaspididae). A loose network of silken material was found along gal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7427564e617a685418cc7051e6ee1f87
https://doi.org/10.1007/s000400050116
https://doi.org/10.1007/s000400050116
Publikováno v:
Biodiversity and Conservation. 8:1683-1695
Ground-foraging ants (Hymenoptera: Formicidae) were used to assess the conservation value of road verges in a semi-arid region around Prince Albert, Western Cape Province, South Africa. Ant communities were sampled using pitfall traps on 50 sites alo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6769ba06be8550cb350cb3b83093c9d6
https://doi.org/10.1023/a:1008911805007
https://doi.org/10.1023/a:1008911805007
Autor:
H. G. Robertson
Publikováno v:
Insectes Sociaux. 42:411-418
Sperm transfer in the myrmicine antCarebara vidua was studied by making histological sections of newly mated queens. Queens are multiply inseminated, and longitudinal sections through the sperm- filled vagina show that the bundle of sperm from each m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a86b6bc0d2af59e3566fd209d77597b3
https://doi.org/10.1007/bf01242169
https://doi.org/10.1007/bf01242169
Publikováno v:
African Journal of Ecology. 30:322-334
ummary The seasonal abundance of ant and termite species was compared with their occurrence in aardvark faeces on Tussen-die-Riviere Game Farm in the False Karoo, South Africa. Ants and termites were sampled from four vegetation communities in summer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8d709ee5aaeecc0acc76637e40809ae
https://doi.org/10.1111/j.1365-2028.1992.tb00509.x
https://doi.org/10.1111/j.1365-2028.1992.tb00509.x
Publikováno v:
Insectes Sociaux. 37:189-199
We examined morphological and behavioral features of the reproductive biology of the ponerine ant,Streblognathus aethiopicus. Investigation of the ant's ovaries and spermathecae showed that each colony had a single reproductive (= gamergate). Morphol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62bb35f3a89a9fd13a466242195d6b41
https://doi.org/10.1007/bf02224047
https://doi.org/10.1007/bf02224047