Drift rhodophyte blooms emerge in Lee County, Florida, USA: Evidence of escalating coastal eutrophication

Lapointe, Brian E.; Bedford, Bradley J.

doi:10.1016/j.hal.2006.12.005

Cited by 89 publications

(58 citation statements)

References 47 publications

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“…Values are means ± SE, n = 4. CON: control vated by sewage, aquaculture waste, or internal nitrogen sources from benthic cycling, such as in Nanwan Bay, Taiwan (Tsai et al 2005), the east central coast of Florida, USA (Barile 2004), southwest Florida, USA (Lapointe & Bedford 2007), Thau Lagoon in southern France (De Casabianca et al 1997), and Hogs Island Bay, Virginia, USA (Tyler et al 2001). Despite the lack of growth response in G. tikvahiae to N enrichment, the high % tissue N and lower δ 15 N values indicated that uptake of the NO 3 -and NH 4 + fertilizer did occur.…”

Section: Internal Nutrient Poolsmentioning

confidence: 99%

Macroalgal responses to experimental nutrient enrichment in shallow coastal waters: growth, internal nutrient pools, and isotopic signatures

Teichberg¹,

Fox²,

Aguila³

et al. 2008

Mar. Ecol. Prog. Ser.

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Increased nutrient inputs to temperate coastal waters have led to increased occurrences of macroalgal blooms worldwide. To identify nutrients that are limiting to macroalgae and to determine whether different forms of these nutrients and long-term ambient nutrient conditions affect macroalgal response, we used in situ enrichment methods and tested the response of 2 bloom-forming species of macroalgae, Ulva lactuca and Gracilaria tikvahiae, from shallow estuaries of Waquoit Bay, Massachusetts, USA, that receive different land-derived N inputs. We enriched caged macroalgal fronds with nitrate, ammonium, phosphate, and N + P combinations, and measured growth, nutrient content, and δ 15 N signatures of fronds after 2 wk of incubation. In these estuaries, P did not limit growth, however, the 2 species differed in growth response to N additions. Growth of U. lactuca was greater in Childs River (CR), the estuary with higher nitrate inputs, than in Sage Lot Pond (SLP); growth in SLP increased with nitrate and ammonium enrichment. In contrast, growth of G. tikvahiae was greater in SLP than in CR, but had no growth response to N enrichment in either site. C and N contents differed initially between species and sites, and after nutrient enrichment. Final tissue % N increased and C:N decreased after nitrate and ammonium enrichment. δ 15 N values of the macroalgae demonstrated uptake of the experimental fertilizers, and a higher affinity and faster turnover of internal N pools with ammonium than nitrate enrichment in both species. We suggest that U. lactuca blooms in areas with both high nitrate and ammonium water column concentrations, and is more N-limited in oligotrophic waters where DIN levels are too low to sustain high growth rates. G. tikvahiae has a greater N storage capacity than U. lactuca, which may allow it to grow in less nutrientrich waters.

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Section: Internal Nutrient Poolsmentioning

confidence: 99%

Macroalgal responses to experimental nutrient enrichment in shallow coastal waters: growth, internal nutrient pools, and isotopic signatures

Teichberg¹,

Fox²,

Aguila³

et al. 2008

Mar. Ecol. Prog. Ser.

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“…It can also cause an increase in the biomass of macroalgae that thrive in high-nutrient environments. Subsequently, macroalgal blooms will occur, and the species composition of macroalgal communities will be altered-for example, a shift in dominance from perennial to annual species of macroalgae (Peckol and Rivers, 1995;Díez et al, 1999;Lapointe and Bedford, 2007). In some regions of the world, green macroalgae is more widespread than red and brown macroalgae owing to high nutrient levels; these regions include Waquoit Bay (in Massachusetts, USA) and the European Atlantic coast (Peckol and Rivers, 1995;Bermejo et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial variations in the distribution of macroalgal communities along the Yantai coast, China

Han

Liu

2014

Chin. J. Ocean. Limnol.

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To explore the impact of environmental variables on macroalgal communities, their temporal and spatial distributions were examined along the Yantai coast, China between April 2010 and March 2011. Macroalgae sampling was conducted monthly at four sites along the coast: Jiahe River estuary, Zhifu Island, Fisherman's Wharf, and Yangma Island. The species composition and abundance, and their relationship with environmental variables were assessed. Along the Yantai coast, 35 macroalgae species were identifi ed, including 24 Rhodophyta spp., 7 Chlorophyta, and 4 Phaeophyta spp. Highest species numbers were recorded in the summer at all sampling sites, except in the Jiahe River estuary. Macroalgae biomass was the greatest in the summer. Year-round, the highest species number and dry biomass recorded at Fisherman's Wharf and Yangma Island was attributed to the substrate type. In summer, Ulva pertusa Kjellman was the dominant species identifi ed along the Yantai coast, which indicates a risk of macroalgae blooms. Our results show that seawater temperature and nutrients appear to signifi cantly affect the temporal and spatial patterns of macroalgal abundance along the Yantai coast. The effects of environmental variables on the macroalgae on the Yantai coast need further study.

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“…The county also supported work by Brand's collaborator Brian Lapointe, from the Harbor Branch Oceanographic Institution in Fort Pierce, to study related ties between Caloosahatchee nutrients and recent massive blooms of red-drift algae that periodically clog beaches in the area 5 .…”

Section: Nutrient Pollutantsmentioning

confidence: 85%

Oceanography: Red tide rising

Schrope¹

2008

Nature

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Drift rhodophyte blooms emerge in Lee County, Florida, USA: Evidence of escalating coastal eutrophication

Cited by 89 publications

References 47 publications

Macroalgal responses to experimental nutrient enrichment in shallow coastal waters: growth, internal nutrient pools, and isotopic signatures

Macroalgal responses to experimental nutrient enrichment in shallow coastal waters: growth, internal nutrient pools, and isotopic signatures

Temporal and spatial variations in the distribution of macroalgal communities along the Yantai coast, China

Oceanography: Red tide rising

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