111 research outputs found
р┤╡р╡Ир┤кр╡Нр┤кр┤┐р┤ир╡НтАН р┤Хр┤░р┤пр┤┐р┤▓р╡Ж р┤Ьр╡Ир┤╡р┤Хр╡Гр┤╖р┤┐ (Organic farming in Vypeen Island) Malayalam
рдЦрд╛рд░рд╛ рдкрд╛рдиреА рдЦреЗрддреЛрдВ рдореЗрдВ рдкрд░реНрдпрдиреБрдХреВрд▓ рдФрд░ рдЯрд┐рдХрд╛рдК рдЭреАрдВрдЧрд╛ рдкрд╛рд▓рди
рдХреГрдкрдпрд╛ рдкреВрд░рд╛ рд▓реЗрдЦрд╛ рдкрдв
рдкрдВрдХ рдХреЗрдХрдбреЛрдВ рдХреЗ рдкрд░реНрдпрдиреБрдХреВрд▓ рдЦреЗрддреА рдФрд░ рд░реЛреЫрдЧрд╛рд░
рдХреГрдкрдпрд╛ рдкреВрд░рд╛ рд▓реЗрдЦрд╛ рдкрдв
Zooplankton abundance and distribution at Minicoy lagoon, Lakshadweep
The environmental parameters such as water temperature, salinity, cloud cover wind foree, rainfall
and tide that influence the distribution and abundance of zooplankton at two sites in Minicoy lagoon
were siudied from August 1994 to July 1995. The northern part of the lagoon with more live corals had
better abundance of ooplankton when compared to the southern area, Zooplankton from different
lagoon bottoms namely coralline, sandy and seagrass bed did not how significant variation between
sites. Copepods, 8mphipods and decapod larvae were the dominant groups
Mangrove ecosystems of Minicoy Island, Lakshadweep
Mangroves play an Important role in coral
reef ecosystems. The fringe and basin type mangrove
forests act as depositional areas and are
effective binders of sediments. This reduces the
sediment loads in coastal waters. Trapping and
stabilizing sediments is important for adjacent
coral reefs because it prevents abrasion and burial
of reefs during stormy conditions
Tuna fisheries in India: Recent trends
Tuna is one of the least exploited resources of the Indian seas accounting for 0.98 % of the total marine
fish catch of India at the 1978 level. On the other hand tuna resources have been exploited by countries such as Japan, Korea and Taiwan from the Indian Ocean. Relevant portions of the recommendations of the 'Symposium on scombroid fishes' held at Mandapam camp. The authorities involved with the planning of the Indian Ocean Expedition give due consideration to gathering and collating the information which should be useful in aiding the development of high seas fisheries for scombroid fishes in the Indian Ocean. In the context of these developments and the need for efficient utilisation of the resources of the Exclusive Economic Zone, a brief account on the trend in the tuna fisheries in the country is presented here
An appraisal of the biotic and abiotic factors of the mangrove ecosystem in the Cochin backwater, Kerala
In view of the significance of the mangrove areas for coastal aquaculture, a reconnaissance survey of the mangrove areas in the Cochin estuarine system was undertaken during 1976-78. The mangroves of Cochin are formative, mostly developing on small reclaimed or natural islands. Environmental characters showed considerable seasonal fluctuations, especially the salinity which in some of the natural ponds in the mangrove area varied from freshwater condition to high saline, mainly due
to the monsoonal and tidal influence. The rate of primary production ranged from 0.02 to 2.0 gC/m'/ day which fluctuated from the ambient waters of the estuary
Incursion of brown algae and sargassum fishes into the Cochin backwaters
An incursion of sea weeds like brown algae and reef fishes like Sargassum fishes was observed in the Cochin backwaters on 6-12-1991. It appears that the habitat disturbance caused by the human interference along the southern part of the west coast brought the reef fishes along with the marine algae into the backwaters being assisted by the strong northerly current prevailing during the season
The genome of the crustacean Parhyale hawaiensis, a model for animal development, regeneration, immunity and lignocellulose digestion
The amphipod crustacean Parhyale hawaiensis is a blossoming model system for studies of developmental mechanisms and more recently regeneration. We have sequenced the genome allowing annotation of all key signaling pathways, transcription factors, and non-coding RNAs that will enhance ongoing functional studies. Parhyale is a member of the Malacostraca clade, which includes crustacean food crop species. We analysed the immunity related genes of Parhyale as an important comparative system for these species, where immunity related aquaculture problems have increased as farming has intensified. We also find that Parhyale and other species within Multicrustacea contain the enzyme sets necessary to perform lignocellulose digestion ('wood eating'), suggesting this ability may predate the diversification of this lineage. Our data provide an essential resource for further development of Parhyale as an experimental model. The first malacostracan genome will underpin ongoing comparative work in food crop species and research investigating lignocellulose as an energy source
CMB Observations with a Compact Heterogeneous 150 GHz Interferometer in Chile
We report on the design, first observing season, and analysis of data from a
new prototype millimeter-wave interferometer, MINT. MINT consists of four 145
GHz SIS mixers operating in double-sideband mode in a compact heterogeneous
configuration. The signal band is subdivided by a monolithic channelizer, after
which the correlations between antennas are performed digitally. The typical
receiver sensitivity in a 2 GHz band is 1.4 mK sqrt(s). MINT observed the
cosmic microwave background (CMB) from the Chilean Altiplano. The site has a
median nighttime atmospheric temperature of 9 K at zenith (exclusive of the
CMB). Observations of Mars, Jupiter, and a telescope-mounted calibration source
establish the system's phase and magnitude stability. MINT is the first
CMB-dedicated interferometer to operate above 50 GHz. The same type of system
can be used to probe the Sunyaev-Zel'dovich effect in galaxy clusters near the
SZ null at 217 GHz. We present an analysis of sideband-separated, digitally
sampled data recorded by the array. Based on 215 hours of data taken in late
2001, we set an upper limit on the CMB anisotropy in a band of width Delta
ell=700 around ell=1540 of delta T < 105 microK (95% conf). Increased
sensitivity can be achieved with more integration time, greater bandwidth, and
more elements.Comment: 12 pages, 4 figures. v2: Final ApJS version; rewritten analysis
section made more clea
- тАж