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Natural nutrient enrichment and algal responses in near pristine micro-estuaries and micro-outlets.
TLDR
Enrichment from natural sources display similar responses from primary producers to mesotrophic and/or eutrophic water bodies, with the exception that they revert to a natural state rather than continue into a degraded state as is the case in artificially enriched systems. Expand
Unwinding a Tangled Web: a Fine-Scale Approach towards Understanding the Drivers of Harmful Algal Bloom Species in a Eutrophic South African Estuary
TLDR
A permanently eutrophic South African estuary provided an ideal model ecosystem from which to unravel the drivers of recurrent accumulations of harmful algal bloom (HAB) species, and model results identified temperature as a key driver. Expand
Environmental influences on living marine stromatolites: insights from benthic microalgal communities.
TLDR
Diatoms and cyanobacteria were consistently the dominant groups within the algal community, with minimal green algae present throughout the year, which demonstrates a unique, relatively stable microalgal stromatolite community as opposed to those of other marine strom atolites, which likely require seasonal and stochastic disturbance to persist. Expand
Sex Differentiation Based on the Gular Stripe in the Apparently Monomorphic Cape Gannet
TLDR
The Cape gannet, Morus capensis, has long been considered a monomorphic species despite attempts at phenotypically separating the sexes, but morphometric measurements recorded here provide the first evidence suggesting that the Capegannet demonstrates some level of dimorphism. Expand
Non-reliance of metazoans on stromatolite-forming microbial mats as a food resource
TLDR
Results clearly demonstrate that the dominant macrofaunal grazers do not utilise stromatolite material as a food resource, but rather subsist on autochthonous macroalgae, and suggest that grazers likely have a restrictive influence on pool macro algae, maintaining the competitive balance between micro- and macroalgal groups. Expand
Protection and provisioning: the role of parental behaviour in terms of chick growth and survival in a pelagic seabird
TLDR
It was shown that, although chick growth was predominantly associated with age, parents which made shorter foraging trips clearly raised chicks which grew faster, and chick survival varied greatly between the 2 seasons, which was explained by different levels of nest non-attendance by parents. Expand
Foraging distribution of Cape gannets in relation to oceanographic features, prey availability and marine protected areas
TLDR
The relationship between home range and prey distribution, coupled with recent declines in local prey availability, demonstrates the ability of gannet foraging distribution and places a major constraint on conservation-based spatial planning involving Cape gannets. Expand
Shifts in phytoplankton community structure in response to hydrological changes in the shallow St Lucia Estuary.
TLDR
This study provides the first detailed account documenting the response of the phytoplankton community to recent restoration efforts in the St Lucia Estuary, a Ramsar Site, and indicates the freshening and nutrient-enriched nature of the river. Expand
Drivers of Time-Activity Budget Variability during Breeding in a Pelagic Seabird
TLDR
The biparental strategy of chick provisioning revealed in this study appears to be an example where the costs of egg development to the female are balanced by paternal-dominated chick provisioned particularly as the chick nears fledging. Expand
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