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Spongivory on Caribbean reefs releases corals from competition with sponges
- M. Hill
- Environmental ScienceOecologia
- 1 November 1998
Exclusion of sponge predators resulted in increased sponge overgrowth, with a subsequent greater loss of coral cover, compared to uncaged pairwise interactions, and it is proposed that indirect effects arising from spongivory may have large community consequences.
Nearly complete 28S rRNA gene sequences confirm new hypotheses of sponge evolution.
Analysis of over 300 nearly complete 28S ribosomal subunit gene sequences provide specific case studies that illustrate how the dataset confirms new hypotheses of sponge evolution, and provides further support for a revision of the traditional classification of sponges.
Symbiotic zooxanthellae enhance boring and growth rates of the tropical sponge Anthosigmella varians forma varians
- M. Hill
- Environmental Science
- 1 June 1996
It appears that the presence of zooxanthellar symbionts has important ecological and life-history consequences for host sponges, since ability to laterally overgrow competitors will be correlated with the size and activity of Zooxanthella populations.
Sponge heterotrophic capacity and bacterial community structure in high‐ and low‐microbial abundance sponges
- Ericka Poppell, J. Weisz, Lori M. Spicer, A. Massaro, A. Hill, M. Hill
- Environmental Science
- 1 December 2014
The results suggest that the large bacterial communities found in HMA spongees may allow the host to decrease their heterotrophy versus that of LMA sponges with minimal bacterial communities.
Symbiodinium diversity among host clionaid sponges from Caribbean and Pacific reefs: Evidence of heteroplasmy and putative host-specific symbiont lineages.
Observations on a new two-sponge symbiosis from the Florida Keys
A preliminary taxonomic analysis of the interacting sponges, a description of the habitat where the association is found, and basic demographic data are presented, to discuss hypotheses concerning the evolutionary and ecological significance of these associations.
A mass bleaching event involving clionaid sponges
The observations reported here indicate that sponge–Symbiodinium symbioses can be destabilized by environmental stressors in a manner similar to corals, troubling given increasing intensity and frequency of warming events, the abundance of sponges in reef ecosystems, and the essential ecological role they play in coral reef productivity.
BATHYMETRIC PATTERNS OF BODY SIZE IN DEEP‐SEA GASTROPODS
- M. Rex, R. Etter, A. Clain, M. Hill
- Environmental ScienceEvolution; international journal of organic…
- 1 August 1999
This work presents the first standardized measurements of larval and adult size among ecologically and phylogenetically similar species across a broad and continuous depth range, using the largest family of deep‐sea gastropods (the Turridae).
Fern-associated arbuscular mycorrhizal fungi are represented by multiple Glomus spp.: do environmental factors influence partner identity?
- Brittany West, J. Brandt, Kay Holstien, A. Hill, M. Hill
- Environmental ScienceMycorrhiza
- 26 February 2009
Results indicate that this molecular approach may be a useful tool for detecting AMF in ferns compared to traditional techniques based on morphology and challenge the hypothesis that the extent or degree of fern–fungal symbiosis is somehow tied to root complexity.
RNA interference in marine and freshwater sponges: actin knockdown in Tethya wilhelma and Ephydatia muelleri by ingested dsRNA expressing bacteria
P phenotypic changes result from 'knocking down' expression of the actin gene and this technique provides an easy, efficient loss-of-function manipulation for developmental and gene regulatory studies in these important non-bilaterian animals.