RETINAL detachment is sometimes due to retinal breaks anterior to the ora serrata in the pars plana ciliaris. This clinical feature has previously been reported by Schepens and Bahn (1950), Schepens (1951), Dobbie and Phillips (1962), and Cox, Schepens, and Freeman (1966) in relation to retinal detachment. Weidenthal and Schepens (1966), who were able to produce retinal breaks at the pars plana...

Over 4,600 species of plants have been introduced into the Hawaiian Islands over the last 200 years. Only 86, less than 2% of the total, have become serious pests of native ecosystems. Of these, the most significant are Andropogon virginicus. Clidemia hirta, Lantana camara, Leucaena leucocephala, Melinis minutiflora, Myrica faya, Passiflora mollissima, Pennisetum clandestinum, P. setaceum, Psid...

Edaphic properties have been widely shown to influence community composition and distribution. However, the degree which edaphic factors can affect grasses in semi-arid lowlands is still little researched. We assessed significance of nine explain distributions 65 grass species with various ecological traits (i.e., indicator values for their preferred habitat) Pakistan. To record information on ...

Most arid and semiarid areas are bare greatly infested with intrusive wild species. Buffel grass (Cenchrus ciliaris L.) Sudan (Sorghum sudanense Piper.) the supreme drought-tolerant grasses that commonly grown in dry regions. Besides water, nitrogen (N) is a vital element limiting growth, yield, herbage quality of such since it has key roles physiological biochemical functions plants. Hence, th...

Some bees and pollen wasps have independently evolved simple, stiff, erect, apically-curved, curly or hooked facial setae as adaptations to collect pollen from nototribic flowers. A distinctive new species of Chalicodoma Lepeletier de Saint Fargeau subgenus Pseudomegachile Friese from Saudi Arabia with such morphological adaptations, Chalicodoma riyadhensesp. n., is described and figured. The s...

The draft genome sequences of two Chromobacterium violaceum strains isolated from the Rio Negro are reported here. These bacteria carry most genetic systems associated with the production of bioactive compounds, but unlike other C. violaceum strains, they lack a dedicated operon for arsenic resistance.

Abstract Background Large old trees are keystone structures of terrestrial ecosystems that provide unique habitat resources for wildlife. Their widespread decline worldwide has serious implications biodiversity and ecosystem integrity. In arid regions, large relatively uncommon often restricted to areas with elevated soil moisture nutrients. Introduced grasses, now pervasive in many dryland env...

We examined the nutritive value of common grass species in the semi-arid rangelands of Borana in southern Ethiopia using local experience based herbage preference (LEBHP) perception and laboratory techniques. Local pastoralists in the study area were asked to identify common grass species and rank them according to the species' preferences and palatability to cattle. The pastoralists listed a t...

Even when no baseline data are available, the impacts of 150 years of livestock grazing on natural grasslands can be assessed using a combined approach of grazing manipulation and regional-scale assessment of the flora. Here, we demonstrate the efficacy of this method across 18 sites in the semidesert Mitchell grasslands of northeastern Australia. Fifteen-year-old exclosures (ungrazed and macro...