Globally, human development has proceeded at a rapid pace for the past several decades for both terrestrial and aquatic/marine environments. Project developers, government decision-makers and the public have had little data regarding the relative values of natural resources, or losses thereof, to facilitate project – and corresponding natural resource takings/ecosystem degradation – decision-making

The study provides an assessment of sand dredging activities from the bottom of the sea during 2016 in the Kingdom of Bahrain. Total Suspended Solids were analyzed from 2010 until 2016 in the northern and eastern locations according to the Manual of oceanographic observations and pollutant analyses methods. Fifty five percent of sand dredging companies complied with some legislation such as air quality

The purpose of this research was to (1) identify an existing water quality index methodology that could be used in Abu Dhabi, United Arab Emirates, and (2) apply the water quality index to Abu Dhabi’s waters to communicate water quality conditions and track changes in conditions over time. The available monitoring data were reviewed to establish the types and frequencies of data available to populate

Abu Dhabi, the capital of the United Arab Emirates, has a coastline that occupies 76% of the country’s Arabian Gulf coastline. The pressures accompanying the economic development that the country is undergoing ultimately affected the marine ecosystem including water and sediment quality. In order to protect the marine ecosystem and public health, the Environment Agency- Abu Dhabi developed ambient

Kuwait, which is located in the northwestern Arabian Gulf, has experienced several incidences of marine life mortality during the past two decades. Mortalities included pelagic and benthic fish, Sea Cucumbers and Mollusks including pearl oysters. Most of the mortalities occurred in Kuwait Bay, which is shallow and semi-enclosed. The Bay encompasses Sulaibikhat Bay, whose coastal waters are nutrient-rich

Species-specific biological data are commonly combined with fishery operational data to model exploited stocks and determine appropriate levels of exploitation. However, this approach to fishery management is predicated using the ability of fishery data collectors to correctly identify exploited species. Sharks and other elasmobranch fishes (Elasmobranchii) can be particularly difficult to identify

Seabirds form important components of marine ecosystems, serving as top predators that indicate long-term stability through feeding interactions. Many species of seabirds reside within the Arabian Gulf although their role in this marine system is not well characterized. Furthermore, oil exploitation and development activities have reduced many species significantly. In this review, I use the Socotra

The Arabian Gulf (or Persian Gulf) suffers from multiple anthropogenic stressors relating primarily to its position as the centre of the global oil industry. Environmental degradation including oil spills, loss of coastal habitat, algal blooms and invasive species is evident but finding the right approach to address such degradation is challenging. The North American Great Lakes faced (and continues

Managing the health of the Gulf ecosystem: GULF 3 summary and synthesis. Aquatic Ecosystem Health & Management. Accepted .

Joe Leach: In memoriam. Aquatic Ecosystem Health & Management. Accepted .

Fond memories of Dr. Joe Leach: A visionary friend of the Great Lakes, 1931-2019. Aquatic Ecosystem Health & Management. Accepted .

Photographs, memories and the Dreissena invasion. Aquatic Ecosystem Health & Management. Accepted .

Dr. Joe Leach’s pioneering influence on North America’s Great Lakes and biological invasions. Aquatic Ecosystem Health & Management. Accepted .

Dr. Joseph Leach: Great Lakes scientist, educator and friend. Aquatic Ecosystem Health & Management. Accepted .

A generous heart and a passion for the Lakes. Aquatic Ecosystem Health & Management. Accepted .

Advocate for ecosystem-based science, friend of the Great Lakes. Aquatic Ecosystem Health & Management. Accepted .

Joe Leach: Reflecting on a mentor. Aquatic Ecosystem Health & Management. Accepted .

A mentor and an inspiration. Aquatic Ecosystem Health & Management. Accepted .

Selection of Dr. Joe Leach’s pioneering publications on exotic species (Zebra Mussels) in the Great Lakes from 1991 to 1999. Aquatic Ecosystem Health & Management. Accepted .

Recent biodiversity surveys in the lentic habitats of Singapore revealed that non-native cichlids (at least 14 species from different origins) were the most abundant species in the reservoirs of Singapore. To understand the diversity and distribution patterns in six reservoirs (two inland and four coastal), we investigated the species richness and abundances of these cichlids. We also investigated

(2020). Editorial. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 1-2.

(2020). Memories. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 3-4.

(2020). Denis Lynn – Life at a glance. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 5-7.

(2020). Denis Lynn’s early days at the University of Toronto. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 8-9.

(2020). What I learned from Denis Lynn. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 10-13.

(2020). Working with the guru of ciliates: Collaborations and achievements in the Great Lakes with Denis Lynn. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 14-16.

(2020). A letter to Denis Lynn. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 17-18.

(2020). Early days at the University of Maryland. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 19-20.

(2020). Denis Lynn and his connections with Germany. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 21-24.

(2020). Denis Lynn and the International Society of Protistologists: Poet, statesman and scholar extraordinaire. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 25-28.

(2020). Denis Lynn: Personification of the Ripple Effect. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 29-31.

(2020). Denis Lynn – A true mentor. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 32-33.

(2020). In memoriam: Dr. Denis H. Lynn. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 34-34.

The ciliate community of the Bay of Quinte, Lake Ontario was assessed over a six year period from 2003 – 2008. One eutrophic site in the upper bay (Belleville) and one more oligotrophic site in the lower bay (Conway), were included in the survey. Both sites contained a mixture of Haptoria, Strobilidium, Halteria, Strombidium, and Vorticella, although the relative proportions varied among sites resulting

Aloricate ciliates are essential members of the pelagic microbial foodweb and are easy to identify in samples, yet the taxonomic database is insufficient and many species have yet to be described. Individuals from the Phylum Ciliophora Doflein, 1901, Order Choreotrichida Small and Lynn, 1985 Small, E.B. , Lynn, D.H. , 1985. Phylum Ciliophora Doflein, 1901. In: J. J. Lee , S. H. Hunter , E.C. Bovee

Conchophthirus curtus is a scuticociliate found in the mantle cavity of unionid bivalve mussels; it is considered by most to be an endocommensal. It was previously redescribed and its morphogenesis has been carefully defined and evaluated. Conchophthirus stomatogenesis along with its enigmatic deep kinetosomal unit as compared with other scuticociliates, peniculines, and peritrichs suggested possible

Dinoflagellates can serve as predators or parasites of tintinnid ciliates. Known predators feed on the ciliate from outside the tintinnid lorica, while parasites either grow in the host cytoplasm or feed inside in the lorica while attached to the outside of the host cell. Here we report mixotrophic species of Scrippsiella that enter the lorica to consume the ciliate zooid of Helicostomella subulata

We reinvestigated Pycnothrix monocystoides Schubotz, 1908 Schubotz, F., 1908. Pycnothrix monocystoides, nov. gen. nov. spec. ein neues ciliates Infusor aus dem Darm von Procavia (Hyrax) capensis (Pallas). Denkschr. (Pycnothrix monocystoides, nov. gen. nov. spec., a new ciliate from the gut of Procavia (Hyrax) capensis (Pallas). In German). Med. Nat. Ges. Jena 13, 1–18. Plates I-III. [Google Scholar]

Ciliated protozoa are important components of the plankton of aquatic systems with ability to recycle nutrients and to link microbial food webs to metazoans. This is because they are numerous and have higher growth rates compared to other unicellular eukaryotes of similar size. Predation and competition are some of the factors that negatively affect their abundance and growth. Studies documenting the

(2020). Mohi Munawar, chief editor conferred with the prestigious Jack Vallentyne outreach award by International Great Lakes Association, Brockport, NY, June, 2019. Aquatic Ecosystem Health & Management: Vol. 23, Denis H. Lynn: A great explorer, scholar and scientist, pp. 1-2.

Studying interactions of coupled human-natural system components provides better understanding of their influences on ecosystem health and improves effectiveness of managing such systems. To understand how human-nature interactions determine the sustainability of tourist destinations, using Jiuzhaigou Nature Reserve as an example, we analyzed how human-nature interactions influenced the reserve’s ecological

This study was carried out in order to investigate the spatial variation of algal toxin (microcystin) concentrations along the shoreline of Lake Victoria. A total of 16 nearshore stations differing in connectivity to the main lake basin were categorized as either closed bays (ratio of bay area to bay opening < 1) or open bays (ratio ≥ 1) and sampled during November and December 2009. Water samples

The maintenance of coral reef framework results from a balance between skeletal accretion and bioerosion, and this balance can be disrupted by environmental stress and disturbance. Coral reefs in northeastern Arabia exist in extreme environmental conditions and have experienced severe disturbances in recent years. This study assessed the intensity of macrobioerosion in two regionally common species

The Arabian Gulf is exposed to intensive dust storms during summer until early winter. We investigated the nutritive effect of the dust on microbial biodiversity of the water column and the productivity of the Gulf. We collected samples from three sites in a transect perpendicular to the shore in March (before the strong dust storms) and in October (after the dust season) in 2013. At the three sites

Coral reefs in the southern Persian/Arabian Gulf have become increasingly degraded in the past two decades, largely due to recurrent mass coral bleaching events. The recovery of these reefs will be largely contingent upon the arrival and settlement of coral larvae and their post settlement growth and survival. Spatial and temporal patterns of coral settlement were quantified on 10 sites spanning >350 km