page_title: Hudson River
section_title: Plankton
hierarchical_section_title: Hudson River / Flora and fauna / Plankton
caption_attribution_description: English: Bird on the east side bank of the Hudson river.
context_page_description: The Hudson River is a 315-mile river that flows from north to south primarily through eastern New York in the United States. The river originates in the Adirondack Mountains of Upstate New York, flows southward through the Hudson Valley to the Upper New York Bay between New York City and Jersey City. It eventually drains into the Atlantic Ocean at New York Harbor. The river serves as a political boundary between the states of New Jersey and New York at its southern end. Further north, it marks local boundaries between several New York counties. The lower half of the river is a tidal estuary, deeper than the body of water into which it flows, occupying the Hudson Fjord, an inlet which formed during the most recent period of North American glaciation, estimated at 26,000 to 13,300 years ago. Tidal waters influence the Hudson's flow from as far north as the city of Troy.
  The river is named after Henry Hudson, an Englishman sailing for the Dutch East India Company, who explored it in 1609, and after whom Hudson Bay in Canada is also named.
context_section_description: Zooplankton are abundant throughout the fresh and saltwater portions of the river, and provide a crucial food source for larval and juvenile fish.
caption: A juvenile house sparrow by the Hudson River
exif: {"Image Make": "Canon", "Image Model": "Canon EOS 60D", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Aperture 3.5.1", "Image DateTime": "2012:07:07 12:04:59", "Image ExifOffset": "194", "EXIF ExposureTime": "1/250", "EXIF FNumber": "63/10", "EXIF ExposureProgram": "Unidentified", "EXIF ISOSpeedRatings": "200", "EXIF ExifVersion": "0230", "EXIF DateTimeOriginal": "2012:07:07 12:04:59", "EXIF DateTimeDigitized": "2012:07:07 12:04:59", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "8", "EXIF ApertureValue": "43/8", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "6613/1072", "EXIF MeteringMode": "Pattern", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "200", "EXIF SubSecTime": "00", "EXIF SubSecTimeOriginal": "00", "EXIF SubSecTimeDigitized": "00", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "1237", "EXIF ExifImageLength": "823", "EXIF FocalPlaneXResolution": "97379/17", "EXIF FocalPlaneYResolution": "331079/57", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard", "EXIF CameraOwnerName": "1581028962", "EXIF BodySerialNumber": "1581028962", "EXIF LensSpecification": "[18, 200, 0, 0]", "EXIF LensModel": "18-200mm", "EXIF LensSerialNumber": "0000000000"}