@article {2097,
	title = {Testing for seasonal displacement in a dung beetle guild},
	journal = {Ecography},
	volume = {18},
	number = {2},
	year = {1995},
	note = {1995ArticleEnglish},
	pages = {173-177},
	abstract = {The temporal overlap between seasonal distribution of adults of 14 congeneric dung beetle species (Aphodius spp.) was determined during one year, based on 11122 captures. The mean seasonal distribution of adults (mean of the sampling dates weighted by the abundance value) was analyzed to elucidate deviations from randomness. In addition, the effect of the shape of seasonal distribution of adults was investigated. In both analyses randomization methods were used. A clear trend exists maximizing the temporal displacement between middle points of chronologically consecutive species: newly emerging species appear every 26 +- 16 days. This trend minimizes the number of species pairs with no or very little temporal overlap. In contrast, the mean temporal overlap of the whole guild seems unaffected, with some species pairs showing a large temporal overlap. Whether the observed pattern can be attributed to interspecific competition must be addressed experimentally.},
	keywords = {anima, Animalia-, Aphodius-sp. (Coleoptera-), Arthropoda-, Climatology- (Environmental-Sciences), Coleoptera-: Insecta-, Development-, Digestive-System (Ingestion-and-Assimilation), Ecology- (Environmental-Sciences), Invertebrata-, Nutrition-, Physiology-},
	author = {Palmer, Miquel}
}
@article {2216,
	title = {Brood care in the dung beetle Onthophagus vacca (Coleoptera: Scarabaeidae): The effect of soil moisture on time budget, nest structure, and reproductive success},
	journal = {Ecography},
	volume = {19},
	number = {3},
	year = {1996},
	note = {1996ArticleEnglish},
	pages = {254-258},
	abstract = {Under laboratory conditions brood care behaviour, nest structure and weight of dung supply in brood chambers of the dung beetle Onthophagus vacca proved to depend on water content of the soil beneath the dung. The substrate in a bucket beneath the dung pat was dry sand (4\% water content) or moist sand (8\% water content). Emigrating beetles were trapped and counted at 12 h intervals. In a total of 109 replicates one pair was released on an artificial 1000 g dung pat. From 95 replicates in which brood chambers were built the following results were derived: 1) Breeding females and resident males which helped the female stayed longer in dung pats on dry sand than in those on moist sand. 2) Nest architecture was influenced by substrate moisture: length of main tunnels did not differ between nests in dry and moist sand, but total length of side tunnels was shorter in dry sand. 3) Numbers of brood chambers were equal in both substrate types, weight of the dung supplies was larger in dry sand. 4) Offspring size was not only influenced by dung provision in the brood chambers. Beetles emerging from chambers in dry sand were smaller than those emerging from moist sand even if the amount of dung supply was equal.},
	keywords = {Animalia-, Animals-, Arthropoda-, Arthropods-, Behavior-, Coleoptera-: Insecta-, Ecology- (Environmental-Sciences), Invertebrata-, Onthophagus-vacca (Coleoptera-), Physiology-, Reproductive-System (Reproduction-), Scarabaeidae- (Coleoptera-), Soil-Science},
	author = {Sowig,Peter}
}
