Type
Crossword
Description

Migration from native range to new ecosystem Invasion
Nutrient enrichment Eutrophication
Continuous accidental drift at low densities Constant
Biofilm on hard substrate in rivers Periphyton
Bottom dwelling organisms Benthos
Fish spawning between stones Lithophilous
Imported organic matter Allochtonous
Organic matter larger than 1 mm CPOM
General limnological term for standing water bodies Lentic
Predation technique of pike and water scorpion Ambush
Functional feeding group of net-spinning caddisflies and blackfly larvae Filterer
Region of sediment and porous space beneath and alongside a stream bed Hyporheos
Downstream distance a nutrient moves while in an organism Turnover
Fish spawning migration from fresh to saltwater Catadromy

Aquatic Ecosystems Word Search

Type
Word Search
Description

spawning grounds
decomposers
American alligator
sea lion
chemosynthetic
fish
depth
oxygen
impact
streams
rivers
antarctic
arctic
coral reef
barrier island
mangrove swamp
salt marsh
estuary
eutrophication
benthic zone
littoral zone
benthos
nekton
plankton
wetland

Freshwater Ecological Concepts Crossword

Type
Crossword
Description

Fish spawning between vegetation Phytophilous
Fish spawning migration from salt to freshwater Anadromy
Organic matter between 0.50 µm and 1 mm FPOM
Instream primary production Autochtonous
General limnological term for rivers and streams Lotic
Biofilm on hard substrate in rivers Periphyton
Surface dwelling organisms Pleuston
Nutrient cycling in rivers Spiraling
General term for aquatic plants Macrophyte
Consumers of biofilm Grazers
Predation technique of pike and water scorpion Ambush
Pulsed high density drift Catastrophic
Deposit feeding macroinvertebrates Gatherers
Process of spreading to a new area Colonization

Chapter 7 Study Guide Crossword

Type
Crossword
Description

land that is periodically under water wetland
organisms that cannot swim against currents plankton
free swimming organisms nekton
bottom dwellers benthos
nutrient rich zone that is near the shore littoral zone
bottom of a lake or pond benthic zone
an increase in the amount of nutrients eutrophication
area in which fresh water from a river mixes with salt water from an ocean estuary
where rivers deposit their mineral-rich mud salt marshes
dense growths of mangrove trees in swampy areas mangrove swamps
often run parallel to the shore and protect the land during natural disasters barrier islands
limestone ridges built by tiny coral animals called coral polyps; algae live inside these coral reefs

Vertebrates Crossword

Type
Crossword
Description

lampreys and hagfish Agnatha
sea cat marine otter
only otter to give birth in the water sea otter
skeleton made of bone, external fertilization osteichthyes
cartilaginous fish chondrichthes
spawns eggs oviparous
threatened mostly by boat accidents manatee
female retains egg inside ovoviviparous
gives live birth viviparous
bio sonar echolocation
returns to shore to lay eggs reptilian
birds aves
contain many secretory tubules nasal salt glands
a group shifting together migration
use swim bladders to regulate bouyancy bony fish
oil filled liver caartilaginous fish
feed by suction jawless fish
generate their own heat endothermic
external warmth of body exothermic
allows bony fish to stay at current water depth swim bladder
enables fish to detect vibrations in the water lateral line
sharks act of bouyancy oil filled liver
jelly filled pores ampullae of lorenzini
sea cow sirenia
underwater for extended periods of time dive reflex
univalve shell melon
toothed whales odonticeti
baleen whales mysticeti
one blow hole toothed

hunting and fishing Word Search

Type
Word Search
Description

northern pike
walleye
turkey
shotguns
rifles
muzzleloaders
lures
ice fishing shacks
fishing poles
ducks
deer
boats
blinds
anchor
arrow
bow

phosphorus cycle Crossword

Type
Crossword
Description

A chemical element found in water, soil and sediments. phosphorus
when a ody of water becomes overly enriched with minerals and nurtients which can cause excessive groth of algae eutrophication
phosphorus is a key nutrient for the growth of _______. plants
This causes an overgrowth of algae which creates a ________ ________ due to the lack of oxygen in the water. dead zone
the draining away of water (or substances carried in it) from the surface of an area of land, a building or structure. runoff
the rigid outer part of the earth, consisting of the crust and upper mantle. lithosphere
all the waters on the earth's surface, such as lakes and seas, and sometimes including water over the earth's surface, such as clouds. hydrosphere
the regions of the surface, atmosphere, and hydrosphere of the earth occupied by living organisms. biosphere
biogeochemical cycle that describes the movement of phosphorus phosphorus cycle
phosphorus on Earth is tied up in rock and sedimentary deposits, from which it is released by _______ weathering
the state or process of rotting/ decay. decompostion
a step of the cycle is when phosphorus is absorption by plants and ________. animals

Biogeochemical Cycles Crossword

Type
Crossword
Description

Our atmosphere contains 78% free _________________________. Nitrogen
Animals need nitrogen to produce ______________________. Proteins
What molecule is produced when nitrogen is fixed? Ammonia
Animals get nitrogen into their systems by eating _______________. Plants
Large organic molecule containing nitrogen that contains your genetic information. DNA
Prokaryote responsible for "fixing" nitrogen. Bacteria
_________________________ occurs when fertilizer runoff causes excess algae and water weeds. Eutrophication
Process where water "evaporates" from plants. Transpiration
What "powers" the water cycle? Sun
Rain, snow, sleet, or hail. Precipitation
The downward entry of water into the soil or rock surface. Infiltration
Process by which water changes from a liquid to a gas. Evaporation
Oats, peas, beans, corn Legumes
Helps plants to grow. Fertilizer
Bacteria that break down organic matter. Decomposers
Process by which water vapor turns into liquid water. Condensation

Water Pollution Crossword

Type
Crossword
Description

What is a single identifiable source of air, water, thermal, noise or light pollution? Point pollution
When there is no single identifiable source of air, water, thermal, noise or light pollution. non point pollution
Water present beneath Earth's surface in soil pore spaces and in the fractures of rock formations. Groundwater
What is the enrichment of a water body with nutrients, usually with an excess amount of nutrients called? Eutrophication
What are these types of pollutants; Lead, mercury & arsenic? Chemical
watertight chamber made of concrete, fiberglass, PVC or plastic, through which domestic wastewater flows for primary treatment. Septic tank
Loss of water-soluble plant nutrients from the soil, due to rain and irrigation. Leaching
What is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period called? Biochemical oxygen demand
The process by which organic substances are broken down into simpler matter. Decomposition
What is an example of an indicator disease? Cholera

Aquaculture Crossword

Type
Crossword
Description

Production of aquatic animals and plants Aquaculture
Adding air into water aeration
Tail fin caudal
Early stages of a fishes life fingerling
Reproductive organs gonads
Used for respiration and excretion gills
Help detect pressure and vibration lateral lines
Measure of acidity, 1-14 pH
Production of fish in constant flow of water raceway
Few/no inputs added, low production extensive
Labor, feed, materials or equipment added, higher production intensive
Holding ponds, used for spawning, rearing or grow-out facility levee
Indoor tanks where water is constantly filtered and reused recirculating
Result of waste breakdown bacteria
Part per thousand ppt

Unit 3 Crossword Puzzle

Type
Crossword
Description

Physical properties of the troposphere of an area based on analysis of its weather records over a long period. Climate
Small plant organisms and animal organisms that float in aquatic ecosystems. Plankton
Strongly swimming organisms found in aquatic systems. Nekton
Bottom-dwelling aquatic organisms. Benthos
Partially enclosed coastal area at the mouth of a river where its freshwater mixes with salty seawater. Estuary
The area of shoreline between low and high tides. Intertidal Zone
Lake with a large supply of plant nutrients, mostly nitrates and phosphates. Eutrophic Lake
Lake with a moderate level of plant nutrients, falling between the two extremes of eutrophic and oligotrophic. Mesotrophic Lake
Land area that delivers water, sediment, and dissolved, substances via small streams to a major stream. Watershed
Land away from the coast that is covered all or part of the time with freshwater. Inland Wetlands
Percentage or number of species that go extinct within a certain period of time. Extinction Rate
A wild species with so few individual survivors that the species could soon become extinct in all or most of its natural range. Endangered
A wild species that is still abundant in its natural range but is likely to become endangered because of a decline in its numbers. Threatened
Variation of clear-cutting in which a strip of trees is clear-cut along the contour of the land, with the corridor being narrow enough to allow natural regeneration within a few years. Strip Cutting
Extremely hot forest fire that burns ground vegetation and treetops. Crown Fire
Removal of trees from a forested area. Deforestation
Land that supplies forage or vegetation for grazing and browsing animals, and is not intensively managed. Rangelands
Destruction of vegetation when too many grazing animals feed too long on a specific area of pasture or rangeland and exceed the carrying capacity of the rangeland. Overgrazing
Unwanted fish, marine mammals, and sea turtles caught in the nets and on the hooks of commercial fishing fleets. Bycatch
Catching fish in huge nets that drift in the water. Drift-net fishing