Papua New Guinea seagrasses and aspects of the biology and growth of Enhalus acoroides (L.f.) Royle

Johnstone, I. M.

doi:10.1016/0304-3770(79)90022-6

Cited by 44 publications

(7 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2A) may have reduced uptake by the seagrass leaves at site 2. Studies elsewhere have provided evidence of these potential effects of epiphytes on nutrient uptake by seagrass leaves (Johnstone 1979;Sand-Jensen et al 1985).…”

mentioning

confidence: 99%

“…Earlier studies have demonstrated the effectiveness of using isotope labels in understanding relationships between epiphytes and their host plant (e.g., Harlin 1973;McRoy and Goering 1974;Johnstone 1979). In addition, numerous studies have used isotope labels to partition nutrient uptake among community components and understand nutrient cycling in both freshwater (e.g., Pelton et al 1998;Eriksson 2001;Hamilton et al 2001) and marine systems (e.g., Winning et al 1999;Koop et al 2001).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Ammonium uptake by seagrass epiphytes: Isolation of the effects of water velocity using an isotope label

Cornelisen

Thomas

2002

Limnology & Oceanography

View full text Add to dashboard Cite

In a series of flume experiments, 15N‐labeled ammonium was used to isolate the effects of water velocity on ammonium uptake by epiphytes from that of an assemblage of organisms that included seagrass leaves, epiphytes, and phytoplankton. Rates of NH4+ uptake for epiphytes, seagrass leaves, and the total assemblage were dependent on water velocity. Ammonium uptake rates for epiphytes, normalized to chlorophyll a, increased by an order of magnitude (0.65 to 6.8 × 1028 g N removed [mg Chl a]−1 s−1) over a range of velocity (0.02–0.20 m s−1) and were correlated to uptake by the entire assemblage. The relationship between NH4+ uptake and velocity for the epiphytes was within the range expected for mass transfer limited uptake, which suggests that water flow strongly influences NH4+ uptake by this important component of seagrass communities. Our results demonstrate that isotopically labeled nutrients can be used to isolate the effects of water velocity on rates of nutrient uptake by an individual component of a community and to evaluate how uptake rates for the component compare to those of the community as a whole.

show abstract

mentioning

confidence: 99%

mentioning

confidence: 99%

Ammonium uptake by seagrass epiphytes: Isolation of the effects of water velocity using an isotope label

Cornelisen

Thomas

2002

Limnology & Oceanography

View full text Add to dashboard Cite

show abstract

“…The comparative regional distribution of seagrass taxa is based on the reports of Hartog (1970), Tsuda et al (1977), Hodgkiss and Morton (1978), Johnstone (1979Johnstone ( , 1982, Fortes (1986).…”

Section: Methodsmentioning

confidence: 99%

Indo-West Pacific Affinities of Philippine Seagrasses

Fortes¹

1988

Botm

View full text Add to dashboard Cite

A dendrograph was developed to depict the mutual relationships among 27 Indo-Pacific countries with similar seagrass floras. Hierarchical (cluster) analysis of the resulting affinities provides strong evidence that the countries could be partitioned into seven discrete provinces. The genus Halophila represents a major connection between most of these provinces, strongly influencing the clustering of the Seagrasses. The degree of species overlap (9.5 -46.2%) between Province A (where Philippines belongs) and Province G (Western, Southern, and Southeastern portions of Australia) favors vicariance as an explanation. The separation of Kampuchea as a discrete unit within Province A appears to be an artifact of collection rather than a reflection of the true floral affinities in the region.The lack of sufficient basic floristic information remains as the most serious limitation in any attempt to describe the phytogeographic affinities of seagrasses in the Indo-Pacific region.

show abstract

“…In favorable seasons, the growth rate of some species can be very high and the rate of blade elongation can reach 1 -1.5 cmday-' (Greenway 1974, Johnstone 1979. The blade growth of Halodule ~@ t i i Ascherson from the Indian River, Florida, during the spring is 11% per day (Virnstein 1982).…”

Section: Introductionmentioning

confidence: 99%

Light and temperature dependence of oxygen exchange, carbon assimilation and primary production in Thalassodendron ciliatum blades

Titlyanov¹,

Leletkin²,

Bil³

et al. 1992

Atoll Research Bulletin

View full text Add to dashboard Cite

Papua New Guinea seagrasses and aspects of the biology and growth of Enhalus acoroides (L.f.) Royle

Cited by 44 publications

References 3 publications

Ammonium uptake by seagrass epiphytes: Isolation of the effects of water velocity using an isotope label

Ammonium uptake by seagrass epiphytes: Isolation of the effects of water velocity using an isotope label

Indo-West Pacific Affinities of Philippine Seagrasses

Light and temperature dependence of oxygen exchange, carbon assimilation and primary production in Thalassodendron ciliatum blades

Contact Info

Product

Resources

About