Introduction Measurements of field conditions (Pulich 1982) revealed that sediment steady state pools of free H 2 S, acid-volatile sulfide (FeS), and water-soluble Fe and Mn correlated with growth of shoalgrass (Halodule wrightü Aschers.) into unvegetated Sediments. A positive correlation with shoalgrass production was found for sulfide (H2S or organic-SH) and Mn2+, while Fe appeared äs a negative edaphic factor when interstitial water concentrations exceeded l g Fe per ml. A buildup of low levels of sediment sulfide during Halodule colonization was postulated äs necessary to condition the Sediments and control soluble Fe (and other heavy metals) levels by complexing with Fe2+, thereby converting it to insoluble FeS. Excess sediment, soluble Fe2* may be potentially toxic to Halodule by similar mechanisms described for rice (Ponnamperuma 1955, Tanaka et al. 1968, Howeler 1973), sugar cane (Clements et al 1974), and various legumes (Ambler and Brown 1969, Brown and Jones 1977, Foy et al 1978). These studies have documented that excess Fe interferes with Mn, P, and K uptake and translocation, äs weU äs with metabolism of other trace metals. Another mechanism for Fe toxicity, involving interference with sulfur metaboÜsm, appears possible, if high, tissue organic-S is required in some
Botanica Marina – de Gruyter
Published: Jan 1, 1982
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera