Survey
* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project
Download Describe Species
Document related concepts
no text concepts found
Transcript
Category of Organism 1992 1995 Viruses 5 4 500 + 1 000 50 500 400 Bacteria 4 4 3 000 + 3 000 50 400 1 000 Fungi 70 72 1 500 + 2 700 200 1 000 1 500 Protozoans 40 40 100 + 200 60 200 200 Algae 40 40 10 000 + 1 000 150 200 400 Plants 250 270 500 + 500 300 300 320 Quality of 1995 Estimates Very Poor Very Poor Moderate Very Poor Very Poor Good Chordates* 45 45 50 + 55 50 50 50 Good Nematodes 15 25 1 000 + 1 000 100 500 400 Poor Molluscs 70 70 180 + 200 100 200 200 Crustaceans 40 40 150 + 200 75 150 150 Arachnids 75 75 1 000 + 1 000 300 750 750 Insects 950 950 100 000 + 100 000 2 000 8 000 8 000 ? 115 ? 800 200 250 250 Moderate Moderate Moderate Moderate Moderate Very Poor Other Total Described Species Estimated Species Upper Limit Lower Working Limit 1992 1995 1995 1992 1995 1 604 + 1 750 117 980 + 111 655 3 635 12 500 13 620 ? Numbers in thousands * Groombridge (1992) looks at the vertebrate subset of chordates not the whole group. Category of Organism Viruses Bacteria Fungi Protozoans Algae Plants Chordates* Nematodes Molluscs Crustaceans Arachnids Insects Other Total Described Species 1992 1995 5 4 4 4 70 72 40 40 40 40 250 270 45 45 15 25 70 70 40 40 75 75 950 950 ? 115 1 604 + ? 1 750 Category of Organism Viruses Bacteria Fungi Protozoans Algae Plants Chordates* Nematodes Molluscs Crustaceans Arachnids Insects Other Total Described Species 1992 1995 5 4 4 4 70 72 40 40 40 40 250 270 45 45 15 25 70 70 40 40 75 75 950 950 ~96 115 1 700 + 1 750 Category of Organism Viruses Bacteria Fungi Protozoans Algae Plants Chordates* Nematodes Molluscs Estimated Species Upper Limit Lower Working Limit 1992 1995 1995 1992 1995 500 + 1 000 50 500 400 3 000 + 3 000 50 400 1 000 1 500 + 2 700 200 1 000 1 500 100 + 200 60 200 200 10 000 + 1 000 150 200 400 500 + 500 300 300 320 50 + 55 50 50 50 1 000 + 1 000 100 500 400 180 + 200 100 200 200 Quality of 1995 Estimates Very Poor Very Poor Moderate Very Poor Very Poor Good Good Poor Moderate Crustaceans Arachnids Insects Other Total 150 + 1 000 + 100 000 + ? 117 980 + 200 1 000 100 000 800 111 655 75 300 2 000 200 3 635 150 750 8 000 250 12 500 150 750 8 000 250 13 620 Moderate Moderate Moderate Moderate Very Poor
Related documents